The LIGO journal club usually meets at 3:00PM on Fridays on 2nd floor of W Bridge (room 265). We meet to discuss a recent journal article from PRL, ApJ or the like. Someone is designated as a lead, to initiate the discussion, but not to present slides or give a monologue. The lead should also post a link to the article the Tuesday before meeting in the Meetings and papers section below.

Preferably, selected articles won't be exceptionally long, and would relate (at least tangentially) to LIGO.

You will be emailed by the journal club Tsar two weeks out from your date and again a week out. The rotating roster can be found at HERE

Pandemic Time Zoom Meetings

This is the recurring zoom link for our virtual Journal Clubs, still at 3 PM on Fridays: https://caltech.zoom.us/j/620707875?pwd=cW9VTkRNMi93aGErOG8xU0tzNzVPUT09

Mailing List

To send emails to everyone: ligo-journal-club@caltech.edu

Click here to subscribe

Zotero

Our group library on Zotero can be used for adding the Journal Club papers (in the JC folder). You can click the link and request to be added to our group library where we put useful papers.

Meetings and papers

Date

Lead

Link (pre-print or other open format) and other links

Link (official DOI peer reviewed version)

Attendance

2026 Mar 6

Chris

“No-cloning” Workaround Could Enable Quantum Cloud

Encrypted Qubits Can Be Cloned

2026 January 23

Daniel

ArXiV: Relaxation of experimental parameters in a Quantum-Gravity Induced Entanglement of Masses Protocol using electromagnetic screening

Accepted link: Relaxation of experimental parameters in a Quantum-Gravity Induced Entanglement of Masses Protocol using electromagnetic screening

2025 Dec 9

Briana

Robust Quantum Control via Multipath Interference for Thousandfold Phase Amplification in a Resonant Atom Interferometer

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.243403

2025 Oct 24

Chris

Measurement-based noiseless linear amplification for quantum communication

Nature Photonics 8 333 (2014)

2025 September 11

Daniel

ArXiV: Stimulated emission or absorption of gravitons by light

Accepted link: Stimulated emission or absorption of gravitons by light

2025 Aug 15

Koji

Using tunable coherence for reaching micrometer coherence lengths and suppressing stray light in a power-recycled Michelson interferometer

2025 Jun 27

Chris

Quantum simulations in phase-space: from quantum optics to ultra-cold physics

2025 May 16

Daniel

ArXiV: Merging L-shaped resonator with Michelson configuration for kilohertz gravitational-wave detection

Published: Merging L-shaped resonator with Michelson configuration for kilohertz gravitational-wave detection

2025 Apr 18

Koji

Pound–Drever–Hall feedforward: laser phase noise suppression beyond feedback

https://doi.org/10.1364/OPTICA.516838

2025 Apr 11

Daniel

ArXiV: Detecting single gravitons with quantum sensing

Published: Detecting single gravitons with quantum sensing

2025 Mar 7

Chris

How light can vaporize water without heat Is This the Best Semiconductor Ever Found?

Reflections on My Research in Heat and Energy

2025 Jan 17

Radhika

SU(1,1) interferometry

The first theoretical proposal for SU(1,1) interferometryThe first experimental realizationDemonstration of 3dB improvement in phase sensitivity over Mach-Zehnder

2025 Jan 10

Paco

Gravitational Metrological Triangle

https://doi.org/10.1103/PhysRevLett.133.241402

Zoom

2024 Dec 6

Koji

DCC P2400554: Tunable coherence laser interferometry: demonstrating 40dB of straylight suppression and compatibility with resonant optical cavities

arxiv PRL published

2024 Nov 22

Aaron

arxiv (Sep 2024): Review of Recent Advances in Gaussian Process Regression Methods

Advances in Intelligent Systems and Computing (May 2024): same title

2024 Nov 15

Daniel

ArXiV: Experimental Demonstration of a Versatile and Scalable Scheme for Iterative Generation of Non-Gaussian States of Light

Published: Experimental Demonstration of a Versatile and Scalable Scheme for Iterative Generation of Non-Gaussian States of Light

2024 Sep 13

Alex

https://journals.aps.org/prapplied/pdf/10.1103/PhysRevApplied.22.014024

Electrical trace analysis of superconducting nanowire photon-number-resolving detectors

2024 Sep 6

Alex

2024 Aug 30

Lee

2024 Aug 23

Chris

https://web.stanford.edu/~boyd/papers/CAD_lc.html

A New CAD Method and Associated Architectures for Linear Controllers

2024 Aug 9

Aaron (standing in for Paco)

Multicolour stretchable perovskite electroluminescent devices for user-interactive displays

2024 July 19

Daniel

Mechanical Detection of Nuclear Decays

2024 July 19

Jeff

Squeezed light in an optical parametric oscillator network with coherent feedback quantum control

2024 Jun 21

Radhika

2024 Jun 14

Aaron GJ

Medium BB84 QKD Article

Toward large-scale fault-tolerant universal photonic quantum computing

2024 Jun 7

Sander

https://arxiv.org/abs/2311.06335

Observing supermassive black holes with deci-Hz gravitational-wave detectors

2024 May 31

Alex

2024 May 24

Lee

2024 May 17

Chris

An AI-powered revolution in clean energy chemistry

How to build an effective self-driving laboratory

2024 May 10

Ian

https://arxiv.org/pdf/2404.07524

Photon Counting Interferometry to Detect Geontropic Space-Time Fluctuations with GQuEST

2024 May 3

Paco

arxXiv:2404.12311

Laser Excitation of the Th-229 Nucleus

2024 APr 26

Koji

https://doi.org/10.1364/OL.500684

Multiple beam coherent combination via an optical ring resonator

2024 Mar 29

Yuta

arxXiv:2403.15752

Measurement of the Earth Tides with a Diamagnetic-Levitated Micro-Oscillator at Room Temperature, PRL 132, 123601 (2024)

2024 Mar 22

Shruti

Optical backaction-evading measurement of a mechanical oscillator

2024 Feb 9

Chris

Sounding Out Earth's Hum Ocean 'hum' hotspot located

The origin of deep ocean microseisms in the North Atlantic Ocean, Proc. R. Soc. A. 464, 777 (2008)

2024 Jan 26

Aaron

Distributed Quantum Sensing Using Continuous-Variable Multipartite Entanglement

Distributed quantum sensing using continuous-variable multipartite entanglement

2023 Oct 27

Paco

Floquet spin amplification

Phys. Rev. Lett 128, 233201

2023 Sep 22

Koji

Charging capacitors from thermal fluctuations using diodes

Phys. Rev. E 108, 024130

2023 Aug 18

Yuta

Observable quantum entanglement due to gravity and Decoherence effects in non-classicality tests of gravity

npj Quantum Information 6, 12 (2020)

2023 Jul 28

Chris

Micro-fabricated mirrors with finesse exceeding one million

Optica 9, 965 (2022)

2023 Mar 24

Shruti

https://arxiv.org/abs/2107.09582

A photonic integrated continuous-travelling-wave parametric amplifier

2023 Feb 3

Ian

State-space solutions to standard H_2 and H_inf control problems

2022 Nov 18

Yuta

10 dB Quantum-Enhanced Michelson Interferometer with Balanced Homodyne Detection

2022 Nov 11

Anchal

Epitaxial growth of GaP/AlGaP mechanical loss of GaP/AlGaP

2022 Nov 4

Rana

Excess Noise in AlGaAs Coatings

so many

2022 Oct 21

Chris

Materials challenges for the Starshot lightsail Building the Starshot sail: A Q&A with Harry Atwater

Nature Mater 17, 861 (2018)

2022 Sep 9

Paco

Generation of entanglement from mechanical rotation

2022 Jul 8

Aaron

Strained crystalline nanomechanical resonators with quality factors above 10 billion

2022 Jun 3

Yehonathan

Protocol for Generating Optical Gottesman-Kitaev-Preskill States with Cavity QED

2022 May 20

Yuta

https://arxiv.org/abs/1906.06018

Stellar interferometry for gravitational waves JCAP11(2021)008

2022 May 06

Shruti

https://arxiv.org/abs/2201.06185

Generation of Schrödinger cat states with Wigner negativity using a continuous-wave low-loss waveguide optical parametric amplifier

2022 Apr 21

Paco

Discovering governing equations from data by sparse identification of nonlinear dynamical systems

PNAS (2015)

10-ish

2022 Apr 7

Chris

Estimate of the carbon footprint of astronomical research infrastructures

Nature Astronomy (2022)

2022 Mar 25

Alan

https://arxiv.org/pdf/2107.04601.pdf and https://physics.aps.org/articles/v15/34

Bridging the µHz gap in the gravitational-wave landscape with binary resonance

2022 Feb 18

Hang

https://arxiv.org/abs/1712.09719 and https://phys.org/news/2022-03-moon-orbit-gravitational-detector.html

Systematic calibration error requirements for gravitational-wave detectors via the Cramér-Rao bound and N/A

2021 Jan 28

Aaron

[[]]

Gravitational wave sensors based on superconducting transducers

2021 Oct 14

Aaron

https://arxiv.org/abs/2102.05859

Rare Events Detected with a Bulk Acoustic Wave High Frequency Gravitational Wave Antenna

2021 Sep 24

Hang

https://arxiv.org/abs/1702.03329

Quantum correlation measurements in interferometric gravitational-wave detectors

2021 Aug 20

Koji

https://arxiv.org/abs/0911.3470 [Presentation PPT]

Nonequilibrium Fluctuation Relations in a Quantum Coherent Conductor

9

2021 Aug 6

Gabriele

https://arxiv.org/abs/2107.13555

Light bending and X-ray echoes from behind a supermassive black hole

4

2021 Jul 23

Shruti

https://arxiv.org/abs/2012.15188

Real-time optimal quantum control of mechanical motion at room temperature

2021 Jul 16

Paco (for Anchal)

Rotation sensing with trapped ions

https://doi.org/10.1088/1361-6455/aa5a8f

good?

2021 May 7

Aaron

A diffuse core in Saturn revealed by ring seismology

2021 Apr 30

Hang

Bayesian parameter estimation using conditional variational autoencoders for gravitational-wave astronomy

2021 Apr 23

Ian

Spatiotemporal control of laser intensity

https://doi.org/10.1038/s41566-018-0121-8

2021 Mar 26

Koji

Deep phase modulation interferometry

https://doi.org/10.1364/OE.18.019076 (Open Access)

2021 Mar 19

Yehonathan

Fluidic shaping of optical components Conference Presentation

2021 Mar 12

Gabriele

1909.00912

Enforcing Analytic Constraints in Neural Networks Emulating Physical Systems

2021 Feb 26

Shruti

Laser phase plate for transmission electron microscopy

2021 Feb 19

Anchal

Simulating Ising Spins in External Magnetic Fields with a Network of Degenerate Optical Parametric Oscillators

2021 Feb 12

Rana

Probing the Ultimate Limit of Fiber-Optic Strain Sensing

2021 Feb 5

Chris

The Heisenberg limit for laser coherence (arXiv) Reimagining the laser

Nature Physics (2020)

2021 Jan 22

Jamie

Quantum computational advantage using photons (arXiv) note: Science link preferred

Science

2021 Jan 15

Alan

NANOGrav potential isotropic stochastic signal, arXiv

pub

2020 Dec 17

Jon

Point absorbers in Advanced LIGO

2020 Dec 11

Paco

Accelerating light pulses - preprint

Accelerating light pulses

2020 Nov 20

Aaron

Electronic noise of warm electrons in semiconductors from first-principles

2020 Nov 13

Hang

Real-time detection of gravitational waves from binary neutron stars using artificial neural networks

https://www.sciencedirect.com/science/article/pii/S0370269320301349?via%3Dihub

2020 Nov 6

Ian M.

A one-way speed of light experiment

https://aapt.scitation.org/doi/10.1119/1.3160665

2020 Oct 9

Yehonathan

Narrow-linewidth lasing and soliton Kerr microcombs with ordinary laser diodes

https://www.nature.com/articles/s41566-018-0277-2

2020 Oct 2

Koji

Detecting acoustic blackbody radiation with an optomechanical antenna

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.120603

2020 Sep 18

Shruti

Extending the piezoelectric transducer bandwidth of an optical interferometer by suppressing resonance using a high dimensional IIR filter implemented on an FPGA

https://doi.org/10.1063/1.5143477

2020-09-11

Rana

Spotlight on LEO sat interference

https://arxiv.org/abs/2006.12417

yes

2020 August 20

Raymond

https://arxiv.org/abs/2008.02373, previous Nature null result

Exponentially faster cooling in a colloidal system

2020 August 13

Jamie

Pulsar Timing Array Constraints on Primordial Black Holes with NANOGrav 11-Year Dataset

https://arxiv.org/abs/1910.12239

2020 June 19

Rico

Pi from the Sky: null test of GR from a population of GR observables

On parametric tests of GR and false d.o.f.

2020 June 19

Hang

1103.0880

On the excitation of f modes and torsional modes by magnetar giant flares

2020 June 12

Yehonathan

Continuous variables error correction with integrated biphoton frequency combs

2020 June 5

Aaron / Shruti

Generation of multiphoton entangled quantum states by means of integrated frequency combs

Continuous-variable quantum computing in the quantum optical frequency comb

8

2020 May 22

Lilli

Fractional statistics in anyon collisions

Fractional statistics in anyon collisions

2020 May 15

Koji

Spitzer Observations of the Predicted Eddington Flare from Blazar OJ 287

Spitzer Observations of the Predicted Eddington Flare from Blazar OJ 287

12

2020 May 8

gautam

GW190412: Observation of a Binary-Black-Hole Coalescence with Asymmetric Masses

8

2020 May 1

Yehonathan

Harnessing speckle for a sub-femtometre resolved broadband wavemeter and laser stabilization Overcoming the speckle correlation limit to achievea fiber wavemeter with attometer resolution

2020 Apr 24

Anchal

Highly reflective low-noise etalon-based meta-mirror

https://doi.org/10.1103/PhysRevD.98.082003

8

2020 Apr 17

Shruti

Opto-mechanical Bell Test

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.220404

2020 Apr 10

Anchal

The PVLAS Experiment: measuring vacuum magnetic birefringence and dichroism with a birefringent Fabry–Perot cavity Further reading: https://cerncourier.com/a/search-for-wisps-gains-momentum/

https://doi.org/10.1140/epjc/s10052-015-3869-8

7-9

2020 Mar 13

Jon

Demonstration of interferometer enhancement through EPR entanglement

https://doi.org/10.1038/s41566-019-0583-3

2020 Mar 6

Duo

https://www.nature.com/articles/s41586-019-1157-8, "All-optical spiking neurosynaptic networks with self-learning capabilities"

https://doi.org/10.1038/s41586-019-1157-8

5

2020 Feb 7

Ian

https://arxiv.org/abs/1909.11090, "What if Planet 9 is a Primordial Black Hole?"

11

2020 Jan 24

Aidan

https://arxiv.org/abs/2001.05712, "Multi-node optical frequency dissemination with post automatic phase correction"

2020 Jan 17

Lilli

https://arxiv.org/abs/1912.04903

2020 Jan 10

Koji

arxiv:nucl-ex/1905.06308

Energy of the 229Th nuclear clock transition

2019 Dec 20

Yehonathan

https://journals.aps.org/prx/abstract/10.1103/PhysRevX.9.041025

Nanorheology of Interfacial Water during Ice Gliding

2019 Dec 13

Gabriele

arXiv:cs-LG/1912.04825

Integration of Neural Network-Based Symbolic Regression in Deep Learning for Scientific Discovery

2019 Dec 06

Shruti

arXiv:quant-ph/0412078

Quantum-Enhanced Measurements: Beating the Standard Quantum Limit

8

2019 Nov 22

Anchal

Arxiv Pre-print

Chaos in quantum channels

5

2019 Nov 15

Rana

Revsiting Cold Fusion

Commentary

2019 Nov 8

Chris

Bell's theorem for temporal order

2019 Oct 31

Raymond

Piezoelectrically Tuned Multimode Cavity Search for Axion Dark Matter

2019 Oct 18

Alan

GW190425: Observation of a Compact Binary Coalescence with Total Mass ~3.4 Msun

2019 Oct 11

Shreya

Gravitational Probes of Dark Matter Physics

2019 Oct 4

Jon

Novel signatures of dark matter in laser-interferometric gravitational-wave detectors

2019 Sep 27

Duo

https://www.pnas.org/content/115/9/1992

2019 Sep 13

Aaron

https://www.sciencedirect.com/science/article/pii/S0264127519303491?via%3Dihub

2019 Aug 9

Lilli

arXiv 1906.10260

2019 Aug 2

Koji

arXiv 1812.03842

Crystalline optical cavity at 4  K with thermal-noise-limited instability and ultralow drift

2019 July 26

gautam

R. Pintelon, J. Schoukens, Ch 6: "An Intuitive Introduction to Frequency Domain Identification"

~8

2019 July 12

Gabriele

Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM Prospects for Resolving the Hubble Constant Tension with Standard Sirens https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.221301

2019 June 28

Nobody

Axion Dark Matter Search with Interferometric Gravitational Wave Detectors

2019 June 14

Rana

Internal structure of white dwarfs from gravitational waves Understanding the evolution of close white dwarf binaries

-

2019 Apr 26

Jon

arXiv 1812.09942

2019 Apr 12

Aaron

arXiv 1605.00539v2

Introduction to Quantum-limited Parametric Amplification of Quantum Signals with Josephson Circuits

8

2019 Apr 5

Jess

arXiv 1903.07603

Evidence for Physics Beyond Standard Model Cosmology

4

2019 Mar 15

RNaana

https://actu.epfl.ch/news/scientists-build-the-smallest-optical-frequency--5/

Microresonator-Based Optical Frequency Combs

9

2019 Mar 1

Koji

ArXiv:1810.00728

Picometer-Stable Hexagonal Optical Bench to Verify LISA Phase Extraction Linearity and Precision

6

2019 Feb 22

Aaron

Proposal for an Optomechanical Traveling Wave Phonon-Photon Translator

Phononic bandgap nano-acoustic cavity with ultralong phonon lifetime

5

2019 Feb 1

rAnA

Pair Fireball Precursors of Neutron Star Mergers

Pair fireball precursors of neutron star mergers

2019 Jan 18

Gabriele Vajente

In situ correction of mirror surface to reduce round-trip losses in Fabry–Perot cavities

Reduction of higher order mode generation in large scale gravitational wave interferometers by central heating residual aberration correction

6

Past meetings (archival)

Journal club roster 2018

You can find an ordered list of upcoming presenters HERE. The JCTsar script will chose people in this order.

If you find you can't do a week that you are assigned to then find someone willing to trade and update that spreadsheet.

Highlighted papers pool

If we are short of a presenter we will draw something from this list of papers. If you find any papers that would be interesting to discuss at future journal club meetings, then you should add them to the list on the following page:

Interesting papers

Older papers on this list can be found in the Interesting papers (archive) page.

Chooser script (Updated python)

https://github.com/fincle/RoboTsar

The python script TsarMailer.py downloads the google spreadsheet list. This sheet contains an ordered list of names and a list of public holidays to veto. It counts the number of days since the start of the year, vetoing public holidays and chooses presenters sequentially from the list. The scripts loops back to the beginning once the end is reached. An arbitrary phase shift is also added to the week number so that the list position can be twiddled in the event the presenter list length changes and position needs to be fixed.

If a swap of names is performed leaving the list length the same there is no need to adjust the phase factor.

Three other scripts exist to remind the presenter to post a paper and to remind people on the day.

Reorganization and topics

We are looking to shake up the structure of journal club by focusing attention on singular themes for month periods. The idea is to develop a deeper understanding of each topic rather than dipping into topics at random.

Please edit this section with any ideas and suggestions as we figure out exactly what we are going to cover.

Some suggested themes Experimental: - Thermal noise topics - Quantum mechanics in GW detectors and optimal detector design - Seismic cloaking and novel 'feed forward' reduction of seismic noise - Alternaive GW detectors (i.e. not laser interferometry)

Data and astrophysics: - GW sources and astrophysics of a particular class of stars (i.e. Kilonovae, pulsars etc) - Cosmology and GW detection topic (GW CMB, early universe remnants?) - Exotic blackhole high energy physics coming out of GW detection - Glitches and detector characterization (machine learning stuff too?) - Bayesian statistics and optimal parameter extraction

Other: - Effective outreach and evidence based teaching - Diversity in physics

Journal_Club (last edited 2026-03-04 05:22:35 by ChristopherwipfATligoDOTorg)