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Non-classical light field generator with phase self-compensation

A field generator and self-compensating technology, applied in the non-classical optics field, can solve the problems of increasing the difficulty of adjusting the optical cavity, unfavorable for the preparation of a high-compression and high-stability compressed state optical field, etc., and achieve a convenient and fast adjustment process and a large compressibility. , the effect of structural stability

Active Publication Date: 2019-07-30
SHANXI UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, the former will increase the difficulty of optical cavity adjustment, and the latter will introduce cavity loss, which is not conducive to the preparation of high compression and high stability squeezed state optical field

Method used

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  • Non-classical light field generator with phase self-compensation
  • Non-classical light field generator with phase self-compensation
  • Non-classical light field generator with phase self-compensation

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Embodiment 1

[0044] The device in Embodiment 1 generates a squeezed state light field, while this embodiment generates a dual-mode entangled state light field. In this embodiment, the fifth beam splitter 20 divides the frequency-doubled light 43 generated by the laser 41 into two beams, which respectively pass through two devices of the same frequency-doubled light part, and respectively combine with the beam reflected by the third beam splitter 3 The fundamental frequency light enters the optical parametric cavity to generate two beams of signal light, wherein the first output signal light 47 passes through the fifth dichroic mirror 18, the second high reflection mirror 21, and the third high reflection mirror 22 in turn, and passes through the third dichroic mirror mirror 12, the second output signal light 30 reflected by the fifth highly reflective mirror 15 interferes on the second beam splitter 52 to generate entangled light, which is divided into two beams by the second beam splitter ...

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Abstract

The invention belongs to the technical field of non-classical optics, and discloses a non-classical light field generator with phase self-compensation. The non-classical light field generator comprises a laser, a compressed light field generator, a first phase shifter, a beam splitter, a central controller, a balanced zero-beat detector and a spectrum analyzer; the compressed light field generatoris used for generating a compressed light field detected by the balanced zero-beat detector; an output signal of the balanced zero-beat detector is connected with the spectrum analyzer; an output endof the spectrum analyzer is connected with the central controller; an output end of the central controller is connected with an input end of a temperature controller, is used for changing the crystaltemperature through the temperature controller, finding the double resonance temperature of an optical parametric cavity amplifier according to the output signals of the single detectors at differentcrystal temperatures, and is further used for finding the phase self-compensation temperature of the optical parameter amplifier according to output signals of a single detector at different crystaltemperatures; and is further used for finding the phase self-compensation temperature of an optical parameter amplifier according to the compression degree of a first compressed light field at different crystal temperatures. The non-classical light field generator with the phase self-compensation provided by the invention improves the non-classical characteristics of the light field and can be applied to the field of non-classical light fields.

Description

technical field [0001] The invention belongs to the technical field of non-classical optics, and in particular relates to a phase self-compensating non-classical light field generator. Background technique [0002] Squeezed state light field is a non-classical light field that compresses the quantum noise of a certain orthogonal component below the limit of classical shot noise. The sensitivity of wave signal detection; in addition, two beams of single-mode squeezed light or one beam of double-mode squeezed light can be used to generate entangled light fields, and then applied to the research of quantum computing, quantum information and quantum communication. Therefore, the study of a non-classical light source with high compression degree that operates continuously and stably has become a hot spot in current scientific research. As early as 1985, Bell Laboratories in the United States first observed the squeezed state experimentally by using the four-wave mixing method; t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35G02F1/39
CPCG02F1/353G02F1/3544G02F1/39G02F1/392
Inventor 王雅君王俊萍张文慧郑耀辉
Owner SHANXI UNIV
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