Compact 6 dB Two-Color Continuous Variable Entangled Source Based on a Single Ring Optical Resonator

Compact 6 dB Two-Color Continuous Variable Entangled Source Based on a Single Ring Optical Resonator

Continuous-variable entangled optical beams at the degenerate wavelength of 0.8 μm or 1.5 μm have been investigated extensively, but separately. The two-color entangled states of these two useful wavelengths, with sufficiently high degrees of entanglement, still lag behind. In this work, we analyze...

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Main Authors: Ning Wang, Shanna Du, Yongmin Li
Format: Article
Language:English
Published: MDPI AG 2018-02-01
Series:Applied Sciences
Subjects:
quantum optics
continuous variable entangled states
nondegenerate optical parametric amplifier
Online Access:http://www.mdpi.com/2076-3417/8/3/330
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spelling doaj-6af3267effc140568ec2b09e7e113f292020-11-25T00:47:51ZengMDPI AGApplied Sciences2076-34172018-02-018333010.3390/app8030330app8030330Compact 6 dB Two-Color Continuous Variable Entangled Source Based on a Single Ring Optical ResonatorNing Wang0Shanna Du1Yongmin Li2State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaContinuous-variable entangled optical beams at the degenerate wavelength of 0.8 μm or 1.5 μm have been investigated extensively, but separately. The two-color entangled states of these two useful wavelengths, with sufficiently high degrees of entanglement, still lag behind. In this work, we analyze the various limiting factors that affect the entanglement degree. On the basis of this, we successfully achieve 6 dB of two-color quadrature entangled light beams by improving the escape efficiency of the nondegenerate optical amplifier, the stability of the phase-locking servo system, and the detection efficiency. Our entangled source is constructed only from a single ring optical resonator, and thus is highly compact, which is suitable for applications in long-distance quantum communication networks.http://www.mdpi.com/2076-3417/8/3/330quantum opticscontinuous variable entangled statesnondegenerate optical parametric amplifier
collection DOAJ
language English
format Article
sources DOAJ
author Ning Wang
Shanna Du
Yongmin Li
spellingShingle Ning Wang
Shanna Du
Yongmin Li
Compact 6 dB Two-Color Continuous Variable Entangled Source Based on a Single Ring Optical Resonator
Applied Sciences
quantum optics
continuous variable entangled states
nondegenerate optical parametric amplifier
author_facet Ning Wang
Shanna Du
Yongmin Li
author_sort Ning Wang
title Compact 6 dB Two-Color Continuous Variable Entangled Source Based on a Single Ring Optical Resonator
title_short Compact 6 dB Two-Color Continuous Variable Entangled Source Based on a Single Ring Optical Resonator
title_full Compact 6 dB Two-Color Continuous Variable Entangled Source Based on a Single Ring Optical Resonator
title_fullStr Compact 6 dB Two-Color Continuous Variable Entangled Source Based on a Single Ring Optical Resonator
title_full_unstemmed Compact 6 dB Two-Color Continuous Variable Entangled Source Based on a Single Ring Optical Resonator
title_sort compact 6 db two-color continuous variable entangled source based on a single ring optical resonator
publisher MDPI AG
series Applied Sciences
issn 2076-3417
publishDate 2018-02-01
description Continuous-variable entangled optical beams at the degenerate wavelength of 0.8 μm or 1.5 μm have been investigated extensively, but separately. The two-color entangled states of these two useful wavelengths, with sufficiently high degrees of entanglement, still lag behind. In this work, we analyze the various limiting factors that affect the entanglement degree. On the basis of this, we successfully achieve 6 dB of two-color quadrature entangled light beams by improving the escape efficiency of the nondegenerate optical amplifier, the stability of the phase-locking servo system, and the detection efficiency. Our entangled source is constructed only from a single ring optical resonator, and thus is highly compact, which is suitable for applications in long-distance quantum communication networks.
topic quantum optics
continuous variable entangled states
nondegenerate optical parametric amplifier
url http://www.mdpi.com/2076-3417/8/3/330
work_keys_str_mv AT ningwang compact6dbtwocolorcontinuousvariableentangledsourcebasedonasingleringopticalresonator
AT shannadu compact6dbtwocolorcontinuousvariableentangledsourcebasedonasingleringopticalresonator
AT yongminli compact6dbtwocolorcontinuousvariableentangledsourcebasedonasingleringopticalresonator
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