Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Frontiers in Optics

Performance Limits of Sub-Shot-Noise-Limited Balanced Detectors

Volkan Gurses, Ali Hajimiri

Published Jan 1, 2022• 1 citation
Publisher

Abstract

We present an analysis of sub-shot-noise-limited coherent receivers for detecting quantum states of light. We introduce a noise model for coherent receivers and outline a guide to coherent receiver design for silicon photonics platforms.
DOI
10.1364/fio.2022.jw4a.32

Related papers

An integrated photonic-electronic quantum coherent receiver for sub-shot-noise-limited optical links

Volkan Gurses, Debjit Sarkar, Samantha I. Davis +1 more

We demonstrate an integrated quantum-limited coherent receiver with co-packaged silicon photonics and electronics. The fully integrated receiver has 2.57 GHz bandwidth, 14.5 dB shot noise clearance, 587 µW knee power, and 2.7 × 0.8 mm2 footprint. With this system, we measure squeezed vacuum showing 0.156 ± 0.039 dB sub-shot-noise-level sensitivity.

Optical Fiber Communication Conference•Jan 1, 2024•3 citations

Quantum-Limited Discrimination between Laser Light and Noise

Jonathan L. Habif, Saikat Guha

We evaluate quantum limits and structured receiver performance for discriminating between a mode excited in a thermal versus a coherent state, and show an interesting inversion in receiver performance going from single-shot to collective measurements.

Frontiers in Optics•Jan 1, 2018•2 citations

Mid-Infrared Balanced Detector for Quantum Light Characterization

Tecla Gabbrielli, Francesco Cappelli, Natalia Bruno +4 more

We present a novel development of a shot-noise-limited mid-infrared balanced detector suitable for unveiling non-classicality in the light emitted by Quantum Cascade Lasers.

OSA Quantum 2.0 Conference•Jan 1, 2020•0 citations

Achieving Sub-Shot-Noise Absorption-Spectroscopy with Avalanche Photodiodes and with a Charge-Coupled Device

Javier Sabines-Chesterking, Rebecca Whittaker, Paul‐Antoine Moreau +10 more

We demonstrate sub-shot-noise spectroscopy, near to the ultimate quantum limit. We use heralded single photons as the optical probe and compare using single photon detectors and a CCD to demonstrate sub-shot-noise performance.

Conference on Lasers and Electro-Optics•Jan 1, 2016•0 citations

Super-resolution at the shot-noise limit with coherent states and photon-number-resolving detectors

Yang Gao, Petr M. Anisimov, Christoph F. Wildfeuer +3 more

There has been much recent interest in quantum optical interferometry for applications to metrology, subwavelength imaging, and remote sensing such as in quantum laser radar (LADAR). For quantum LADAR, atmospheric absorption rapidly degrades any quantum state of light, so that for high-photon loss the optimal strategy is to transmit coherent states of light, which suffer no worse loss than the Beer law for classical optical attenuation, and which provides sensitivity at the shot-noise limit. We show that coherent light coupled with photon-number-resolving detectors can provide a super-resolution much below the Rayleigh diffraction limit, with sensitivity no worse than shot noise in terms of the detected photon power.

arXiv:0907.2382•Journal of the Optical Society of America B•May 13, 2010•71 citations

Integrated balanced homodyne photonic–electronic detector for beyond 20 GHz shot-noise-limited measurements

Cédric Bruynsteen, Michael Vanhoecke, Johan Bauwelinck +1 more

Optical homodyne detection is used in numerous quantum and classical applications that demand high levels of sensitivity. However, performance is typically limited due to the use of bulk optics and discrete receiver electronics. To address these performance issues, in this work we present a co-integrated balanced homodyne detector consisting of a silicon photonics optical front end and a custom integrated transimpedance amplifier designed in a 100 nm GaAs pHEMT technology. The high level of co-design and integration provides enhanced levels of stability, bandwidth, and noise performance. The presented detector shows a linear operation up to 28 dB quantum shot noise clearance and a high degree of common-mode rejection, at the same time achieving a shot-noise-limited bandwidth of more than 20 GHz. The high performance of the developed devices provide enhanced operation to many sensitive quantum applications such as continuous variable quantum key distribution, quantum random number generation, or high-speed quantum tomography.

Optica•Jul 23, 2021•90 citations
There has been much recent interest in quantum optical interferometry for applications to metrology, subwavelength imaging, and remote sensing such as in quantum laser radar (LADAR). For quantum LADAR, atmospheric absorption rapidly degrades any quantum state of light, so that for high-photon loss the optimal strategy is to transmit coherent states of light, which suffer no worse loss than the Beer law for classical optical attenuation, and which provides sensitivity at the shot-noise limit. We show that coherent light coupled with photon-number-resolving detectors can provide a super-resolution much below the Rayleigh diffraction limit, with sensitivity no worse than shot noise in terms of the detected photon power.
Optical homodyne detection is used in numerous quantum and classical applications that demand high levels of sensitivity. However, performance is typically limited due to the use of bulk optics and discrete receiver electronics. To address these performance issues, in this work we present a co-integrated balanced homodyne detector consisting of a silicon photonics optical front end and a custom integrated transimpedance amplifier designed in a 100 nm GaAs pHEMT technology. The high level of co-design and integration provides enhanced levels of stability, bandwidth, and noise performance. The presented detector shows a linear operation up to 28 dB quantum shot noise clearance and a high degree of common-mode rejection, at the same time achieving a shot-noise-limited bandwidth of more than 20 GHz. The high performance of the developed devices provide enhanced operation to many sensitive quantum applications such as continuous variable quantum key distribution, quantum random number generation, or high-speed quantum tomography.