Squeezed Light

Loudon, R.; Knight, Peter

doi:10.1080/09500348714550721

Cited by 1,697 publications

(902 citation statements)

References 136 publications

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“…The next step in this line of research is to consider nonclassical electromagnetic fields [15,16] which are carefully prepared in a particular quantum state, and study their effect on quantum interference [9,10]. In this case it is shown that the quantum noise in the electromagnetic field destroys partly the electron interference fringes.…”

Section: Introductionmentioning

confidence: 99%

Electron interference in mesoscopic devices in the presence of nonclassical electromagnetic fields

Tsomokos

Chong

Vourdas

2005

J. Opt. B: Quantum Semiclass. Opt.

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Abstract. The interaction of mesoscopic interference devices with nonclassical electromagnetic fields is studied. The external quantum fields induce a phase factor on the electric charges. This phase factor, which is a generalization of the standard Aharonov-Bohm phase factor, is in the case of nonclassical electromagnetic fields a quantum mechanical operator. Its expectation value depends on the density matrix describing the nonclassical photons and determines the interference. Several examples are discussed, which show that the quantum noise of the nonclassical photons destroys slightly the electron interference fringes. An interesting application arises in the context of distant electron interference devices, irradiated with entangled photons. In this case the interfering electrons in the two devices become entangled. The same ideas are applied in the context of SQUID rings irradiated with nonclassical electromagnetic fields. It is shown that the statistics of the Cooper pairs tunneling through the Josephson junction depend on the statistics of the photons.

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Section: Introductionmentioning

confidence: 99%

Electron interference in mesoscopic devices in the presence of nonclassical electromagnetic fields

Tsomokos

Chong

Vourdas

2005

J. Opt. B: Quantum Semiclass. Opt.

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“…Therefore, one might expect that some kind of squeezing effects could arise. Similarly to squeezed states of light [58,59], one can introduce squeezed atomic states [58]. This is usually considered for the case of two-level atoms, each of which possesses two internal states.…”

Section: Spin Squeezingmentioning

confidence: 99%

“…Finite level systems, as is known, are conveniently described by means of spin operators, because of which atomic squeezing is commonly called spin squeezing. In order to emphasize that the spin operators, employed for describing finite-level atoms, are not actually the operators representing real spins, but rather are convenient mathematical tools, one also uses the terms of dipole squeezing [58,60] or pseudospin squeezing [61]. In general, one may define squeezing for other operators from a Lie algebra [61,62].…”

Section: Spin Squeezingmentioning

confidence: 99%

Nonlinear coherent modes of trapped Bose-Einstein condensates

Yukalov

Yukalova²,

Bagnato³

2002

Phys. Rev. A

126

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Nonlinear coherent modes are the collective states of trapped Bose atoms, corresponding to different energy levels. These modes can be created starting from the ground state condensate that can be excited by means of a resonant alternating field. A thorough theory for the resonant excitation of the coherent modes is presented. The necessary and sufficient conditions for the feasibility of this process are found. Temporal behaviour of fractional populations and of relative phases exhibits dynamic critical phenomena on a critical line of the parametric manifold. The origin of these critical phenomena is elucidated by analyzing the structure of the phase space. An atomic cloud, containing the coherent modes, possesses several interesting features, such as interference patterns, interference current, spin squeezing, and massive entanglement. The developed theory suggests a generalization of resonant effects in optics to nonlinear systems of Bose-condensed atoms. 03.75. Fi

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“…for the number and squeezed vacuum initial states of the vibration mode, respectively. Here~t and v are From the above asymptotic behavior one readily obthe squeezing parameters and H(x) is the Hermite serves that only n is a critical parameter for stability polynomial [18]. of the spectrum of elementary excitations in the Now all time dependent terms in the Mandel facpresent model.…”

Section: =0mentioning

confidence: 99%

Relation between quantum statistics of phonons and scattered light

Shumovsky

Tanatar

1993

Physics Letters A

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The resonance model ofthe Raman process with the generation ofa Stokes component is solved exactly. The asymptotic behavior ofthe solution is discussed. Mandel's Q-factor is calculated as a function oftime both for the Stokes and the Rayleigh components fortheir dependence on the quantum statistical properties of the vibration mode (phonons). A qualitative difference between the cases of uncorrelated and correlated phonons is found whichmay have interesting experimentalimplications.

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Squeezed Light

Cited by 1,697 publications

References 136 publications

Electron interference in mesoscopic devices in the presence of nonclassical electromagnetic fields

Electron interference in mesoscopic devices in the presence of nonclassical electromagnetic fields

Nonlinear coherent modes of trapped Bose-Einstein condensates

Relation between quantum statistics of phonons and scattered light

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