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

Civil War Book Review

Full Quantum Mechanically Treatment of Squeezed Vacuum State Generation through Self-Rotation

Kebei Jiang, Robinjeet Singh, Petr M. Anisimov, Hwang Lee, Jonathan P. Dowling

Published Jan 1, 2011• 0 citations
Publisher

Abstract

We present a full quantum mechanical picture of squeezed vacuum state generation via self-rotation in an X system. As a result, extra noise that is overlooked in semi-classical picture is found and its effect on the degree of squeezing is discussed.
DOI
10.1364/cleo_at.2011.jthb7

Related papers

Generation of Squeezed Vacuum States via Polarization Self-Rotation

Geoff Campbell, Christopher Healey, J. Appel +3 more

Recently, the possibility of generating squeezed vacuum states via polarization self‐rotation in hot atomic vapour has been debated. We present experimental results confirming that vacuum squeezed states can be generated using this method.

AIP conference proceedings•Jan 1, 2009•0 citations

Experimental Generation And Manipulation Of Quantum Squeezed Vacuum Via Polarization Self-Rotation In Rb Vapor

Travis Horrom

Nonclassical states of light are of increasing interest due to their applications in the emerging field of quantum information processing and communication. Squeezed light is such a state of the electromagnetic field in which the quantum noise properties are altered compared with those of coherent light. Squeezed light and squeezed vacuum states are potentially useful for quantum information protocols as well as optical measurements, where sensitivities can be limited by quantum noise. We experimentally study a source of squeezed vacuum resulting from the interaction of near-resonant light with both cold and hot Rb atoms via the nonlinear polarization self-rotation effect (PSR). We investigate the optimal conditions for noise reduction in the resulting squeezed states, reaching quadrature squeezing levels of up to 2.6 dB below shot noise, as well as observing noise reduction for a broad range of detection frequencies, from tens of kHz to several MHz. We use this source of squeezed vacuum at 795 nm to further study the noise properties of these states and how they are affected by resonant atomic interactions. This includes the use of a squeezed light probe to give a quantum enhancement to an optical magnetometer, as well as studying the propagation of squeezed vacuum in an atomic medium under conditions of electromagnetically induced transparency (EIT). We also investigate the propagation of pulses of quantum squeezed light through a dispersive atomic medium, where we examine the possibilities for quantum noise signals traveling at subluminal and superluminal velocities. The interaction of squeezed light with resonant atomic vapors finds various potential applications in both quantum measurements and continuous variable quantum memories.

•Jan 1, 2013•2 citations

Squeezed states of light with hot atoms

Eugeniy E. Mikhailov

We report on squeezed states of light generated via polarization self rotation effect, their unique properties (low frequency noise suppression, multi mode spatial structure) and application for atom assisted measurements.

Latin America Optics and Photonics Conference•Jan 1, 2014•0 citations

QUANTUM TREATMENT OF THREE MUTUALLY ANISOTROPIC COUPLED OSCILLATORS

M.M. Nassar, M. Sebawe Abdalla

A full quantum mechanical treatment of the problem of three electromagnetic fields is considered. The system consists of three different coupling parameters where the rotating and counter-rotating terms are presented. An exact solution of the wave function in the Schrödinger picture is obtained, and the connection to the coherent states wave function is given. The symmetrical ordered quasi-probability distribution function (W-Wigner function) is calculated via the wave function in the coherent states representation. The Green's function is obtained and employed to find the Bloch density matrix. The expectation value of the energy is also given. In the framework of the vacuum and even coherent states, we have discussed the phenomenon of squeezing. It has been shown that the collapse and revival phenomenon exists at ω1=ω2 and is apparent for a long period of time.

International Journal of Modern Physics B•Sep 30, 2006•3 citations

Squeezing in Finite Superpositions of Photon-number States without the Vacuum

Arkadiusz Orłlowski, Piotr Figurny, Dariusz W. Burak

We show that a finite superposition of photon-number states without the vacuum state can lead to squeezed fluctuations. The properties of these states are discussed.

Journal of Modern Optics•Nov 1, 1991•2 citations

Generation of squeezed state and quantum scaling evolution

Heng Fan

By means of integral techniques within normal product we have studied the dynamic mechanism of the generation of squeezed state and its intrinsic relationship with the quantum scaling evolution.

Acta Optica Sinica•Jan 1, 1986•0 citations
Nonclassical states of light are of increasing interest due to their applications in the emerging field of quantum information processing and communication. Squeezed light is such a state of the electromagnetic field in which the quantum noise properties are altered compared with those of coherent light. Squeezed light and squeezed vacuum states are potentially useful for quantum information protocols as well as optical measurements, where sensitivities can be limited by quantum noise. We experimentally study a source of squeezed vacuum resulting from the interaction of near-resonant light with both cold and hot Rb atoms via the nonlinear polarization self-rotation effect (PSR). We investigate the optimal conditions for noise reduction in the resulting squeezed states, reaching quadrature squeezing levels of up to 2.6 dB below shot noise, as well as observing noise reduction for a broad range of detection frequencies, from tens of kHz to several MHz. We use this source of squeezed vacuum at 795 nm to further study the noise properties of these states and how they are affected by resonant atomic interactions. This includes the use of a squeezed light probe to give a quantum enhancement to an optical magnetometer, as well as studying the propagation of squeezed vacuum in an atomic medium under conditions of electromagnetically induced transparency (EIT). We also investigate the propagation of pulses of quantum squeezed light through a dispersive atomic medium, where we examine the possibilities for quantum noise signals traveling at subluminal and superluminal velocities. The interaction of squeezed light with resonant atomic vapors finds various potential applications in both quantum measurements and continuous variable quantum memories.
A full quantum mechanical treatment of the problem of three electromagnetic fields is considered. The system consists of three different coupling parameters where the rotating and counter-rotating terms are presented. An exact solution of the wave function in the Schrödinger picture is obtained, and the connection to the coherent states wave function is given. The symmetrical ordered quasi-probability distribution function (W-Wigner function) is calculated via the wave function in the coherent states representation. The Green's function is obtained and employed to find the Bloch density matrix. The expectation value of the energy is also given. In the framework of the vacuum and even coherent states, we have discussed the phenomenon of squeezing. It has been shown that the collapse and revival phenomenon exists at ω1=ω2 and is apparent for a long period of time.