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Squeezed states of light are essential for emerging quantum technology in metrology and information processing. Chip-integrated photonics offers a route to scalable and efficient squeezed light generation, however, parasitic nonlinear…

Optics · Physics 2025-02-25 Alexander E. Ulanov , Bastian Ruhnke , Thibault Wildi , Tobias Herr

Ponderomotive squeezing of light, where a mechanical oscillator creates quantum correlations between the phase and amplitude of the interacting light field, is a canonical signature of the quantum regime of optomechanics. At room…

Quantum Physics · Physics 2024-02-16 Guanhao Huang , Alberto Beccari , Nils J. Engelsen , Tobias J. Kippenberg

A synchronously pumped optical parametric oscillator (SPOPO) operating at 93 MHz is used to generate squeezed states at 1035 nm. The system features a counter-propagating beam at the same wavelength as the quantum state, which…

Squeezed light is a key quantum resource that enables quantum advantages for sensing, networking, and computing applications. The scalable generation and manipulation of squeezed light with integrated platforms are highly desired for the…

Optics · Physics 2022-04-06 Pao-Kang Chen , Ian Briggs , Songyan Hou , Linran Fan

We have built a compact light source for bright squeezed twin-beams at 795\,nm based on four-wave-mixing in atomic $^{85}$Rb vapor. With a total optical power of 400\,mW derived from a free running diode laser and a tapered amplifier to…

Quantum Physics · Physics 2012-09-13 Ulrich Vogl , Ryan T. Glasser , Paul D. Lett

Warm rubidium vapours are known to be a versatile medium for a variety of experiments in atomic physics and quantum optics. Here we present experimental results on producing the frequency converted light for quantum applications based on…

Modification of electromagnetic quantum fluctuations in the form of quadrature-squeezing is a central quantum resource, which can be generated from nonlinear optical processes. Such a process is facilitated by coherent two-photon excitation…

Quantum Physics · Physics 2022-11-14 Emil V. Denning , Andreas Knorr , Florian Katsch , Marten Richter

We report quantum enhancement of Faraday rotation spin noise spectroscopy by polarization squeezing of the probe beam. Using natural abundance Rb in 100 Torr of N_2 buffer gas, and squeezed light from a sub-threshold optical parametric…

The recent demonstration of cooling of a macroscopic silicon nitride membrane based on dissipative coupling makes dissipatively coupled optomechanical systems as promising candidates for squeezing. We theoretically show that such a system…

Quantum Physics · Physics 2016-07-19 Kenan Qu , G. S. Agarwal

Quantum noise suppression and phase-sensitive modulation of continuously variable in vacuum and squeezed fields in a hybrid resonant cavity system are investigated theoretically. Multiple dark windows similar to electromagnetic induction…

Quantum Physics · Physics 2023-08-09 Ke Di , Shuai Tan , Liyong Wang , Anyu Cheng , Xi Wang , Yuming Sun , Junqi Guo , Yu Liu , Jiajia Du

We propose a scheme for the generation of a robust stationary squeezed state of a mechanical resonator in a quadratically coupled optomechanical system, driven by a pulsed laser. The intracavity photon number presents periodic intense peaks…

Quantum Physics · Physics 2014-03-03 M. Asjad , G. S. Agarwal , M. S. Kim , P. Tombesi , G. Di Giuseppe , D. Vitali

We propose an experiment to extract ponderomotive squeezing from an interferometer with high circulating power and low mass mirrors. In this interferometer, optical resonances of the arm cavities are detuned from the laser frequency,…

General Relativity and Quantum Cosmology · Physics 2009-11-11 T. Corbitt , Y. Chen , F. Khalili , D. Ottaway , S. Vyatchanin , S. Whitcomb , N. Mavalvala

The preparation of mechanical quadrature-squeezed states holds significant importance in cavity optomechanics because the squeezed states have extensive applications in understanding fundamental quantum mechanics and exploiting modern…

Quantum Physics · Physics 2024-08-27 Yu-Hong Liu , Jie-Qiao Liao

Squeezed light constitutes a key resource for quantum optical technologies including quantum sensing, computing, communication and metrology. For many applications the generation of squeezed light typically requires at least two nonlinear…

We produce a 600-ns pulse of 1.86-dB squeezed vacuum at 795 nm in an optical parametric amplifier and store it in a rubidium vapor cell for 1 us using electromagnetically induced transparency. The recovered pulse, analyzed using time-domain…

Quantum Physics · Physics 2009-11-13 Juergen Appel , Eden Figueroa , Dmitry Korystov , M. Lobino , A. I. Lvovsky

Silicon nitride microresonators driven by strong pump pulses can generate squeezed light in a dominant spectral-temporal mode, a central resource for continuous-variable quantum computation. In the high parametric gain regime, several…

Quantum Physics · Physics 2026-03-23 Emanuele Brusaschi , Marco Liscidini , Matteo Galli , Daniele Bajoni , Massimo Borghi

Squeezed light is usually generated using passive nonlinear materials. Semiconductor lasers and optical amplifiers (SOAs) also offer nonlinearities but they differ in that they add amplified spontaneous emission (ASE). Squeezing to below…

Mesoscale and Nanoscale Physics · Physics 2025-12-29 Ori Gabai , Amnon Willinger , Igor Khanonkin , Vitalii Sichkovskyi , Johann Peter Reithmaier , Gadi Eisenstein

Using a general Hamiltonian treatment, we theoretically study the generation of degenerate quadrature squeezing in a dual-pumped integrated microring resonator coupled to a waveguide. Considering a dual-pump four-wave mixing configuration…

Quantum Physics · Physics 2022-04-06 Hossein Seifoory , Zachary Vernon , Dylan Mahler , Matteo Menotti , Young Zhang , John E. Sipe

We demonstrate the first wavelength-tunable electrically-pumped source of non-classical light that can emit photons with wavelength in resonance with the D2 transitions of 87Rb atoms. The device is fabricated by integrating a novel GaAs…

Optically levitated and cooled nanoparticles are a new quantum system whose application to the creation of non-classical states of motion and quantum limited sensing is fundamentally limited by recoil and bulk heating. We study the creation…

Quantum Physics · Physics 2025-10-08 Felipe Almeida , Peter Barker