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We report the generation of squeezed vacuum states of light at 1550 nm with a broadband quantum noise reduction of up to 4.8 dB ranging from 5 MHz to 1.2 GHz sideband frequency. We used a custom-designed 2.6 mm long biconvex…

Quantum Physics · Physics 2013-10-17 Stefan Ast , Moritz Mehmet , Roman Schnabel

We propose a novel squeezed light source capable of meeting the stringent requirements of continuous variable quantum sampling. Using the effective $\chi_2$ interaction induced by a strong driving beam in the presence of the $\chi_3$…

Quantum Physics · Physics 2019-12-18 Z. Vernon , N. Quesada , M. Liscidini , B. Morrison , M. Menotti , K. Tan , J. E. Sipe

We present the generation and detection of squeezed light in the 2 $\mathrm{\mu m}$ wavelength region. This experiment is a crucial step in realising the quantum noise reduction techniques that will be required for future generations of…

Squeezed light plays a vital role in quantum information processing. By nature, it is highly sensitive, which presents significant practical challenges, particularly in remote detection, traditionally requiring complex systems such as…

We report the experimental generation of squeezed light at 852 nm, locked on the Cesium D2 line. 50% of noise reduction down to 50 kHz has been obtained with a doubly resonant optical parametric oscillator operating below threshold, using a…

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 states of light constitute an important nonclassical resource in the field of high-precision measurements, e.g. gravitational wave detection, as well as in the field of quantum information, e.g. for teleportation, quantum…

Quantum Physics · Physics 2015-05-14 Moritz Mehmet , Henning Vahlbruch , Nico Lastzka , Karsten Danzmann , Roman Schnabel

A new scheme is described for pulsed squeezed light generation using femtosecond pulses parametrically deamplified through a single pass in a thin (0.1mm) potassium niobate KNbO3 crystal, with a significant deamplification of about -3dB.…

Quantum Physics · Physics 2009-11-10 J. Wenger , R. Tualle-Brouri , P. Grangier

Random numbers are a basic ingredient of simulation algorithms and cryptography, and play a significant part in computer simulation and information processing. One prominent feature of a squeezed light is its lower fluctuation and more…

Quantum Physics · Physics 2024-04-17 Jialin Cheng , Shaocong Liang , Jiliang Qin , Jiatong Li , Zhihui Yan , Xiaojun Jia , Changde Xie , Kunchi Peng

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

Squeezed light is a critical resource in quantum sensing and information processing. Due to the inherently weak optical nonlinearity and limited interaction volume, considerable pump power is typically needed to obtain efficient…

One of the leading approaches to large-scale quantum information processing (QIP) is the continuous-variable (CV) scheme based on time multiplexing (TM). As a fundamental building block for this approach, quantum light sources to…

We present a cavity-QED theory for generating squeezed light from semiconductor quantum dots (QDs) integrated in microcavities. We formulate equations of motion for an inhomogeneously broadened QD ensemble that is incoherently pumped and…

Quantum Physics · Physics 2025-08-22 Sahil Patel , Sean Doan , Chen Shang , Frederic Grillot , Frank Jahnke , John Bowers , Galan Moody , Weng Chow

We consider a semiconductor quantum-well placed in a wave guide microcavity and interacting with the broadband squeezed vacuum radiation, which fills one mode of the wave guide with a large average occupation. The wave guide modifies the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Eran Ginossar , Shimon Levit

An integrated silicon nitride resonator is proposed as an ultra-compact source of bright single-mode quadrature squeezed light at 850 nm. Optical properties of the device are investigated and tailored through numerical simulations, with…

Quantum Physics · Physics 2023-07-19 Ulrich B. Hoff , Bo M. Nielsen , Ulrik L. Andersen

Squeezed light is a quantum resource that can improve the sensitivity of optical measurements. However, existing sources of squeezed light generally require high powers and are not amenable to portability. Here we theoretically investigate…

Quantum Physics · Physics 2020-12-07 Bonnie L. Schmittberger

We propose a source of multimode squeezed light that can be used for the superresolving microscopy beyond the standard quantum limit. This source is an optical parametric amplifier with a properly chosen diaphragm on its output and a…

Quantum Physics · Physics 2009-11-10 Ivan V. Sokolov , Mikhail I. Kolobov

In this work, we investigate three different compact fibered systems generating vacuum squeezing that involve optical cavities limited by the end surface of a fiber and by a curved mirror and containing a thin parametric crystal. These…

Quantum Physics · Physics 2018-03-22 Alexandre Brieussel , Konstantin Ott , Maxime Joos , Nicolas Treps , Claude Fabre

We investigate the reduction of the electromagnetic field fluctuations in resonance fluorescence from a single emitter coupled to an optical nanostructure. We find that such hybrid system can lead to the creation of squeezed states of…

Quantum Physics · Physics 2015-01-05 Diego Martín Cano , Harald R. Haakh , Karim Murr , Mario Agio

We reported a compact squeezed light source consisting of an diode laser near resonant on 87Rb optical D1 transition and an warm Rubidium vapor cell. The -4dB vacuum squeezing at 795 nm via nonlinear magneto-optical rotation was observed…

Quantum Physics · Physics 2015-12-29 Guzhi Bao , Xiaotian Feng , Bing Chen , Jinxian Guo , Heng Shen , Liqing Chen , Weiping Zhang