Efficient Frequency Conversion in a Degenerate 
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 Microresonator

Wang, Jia-Qi; Yang, Yuan-Hao; Li, Ming; Hu, Xinxin; Surya, Joshua B.; Xu, Xin-Biao; Dong, Chun‐Hua; Guo, Guang‐Can; Tang, Hong X.; Zou, Chang‐Ling

doi:10.1103/physrevlett.126.133601

Cited by 39 publications

(10 citation statements)

References 51 publications

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“…Optomechanical systems studying the interaction between light and mechanical resonator provide a promising platform for ultrasensitive sensing technologies [16][17][18][19][20][21][22][23][24][25][26][27]. Various ultrasensitive optomechanical sensors have been demonstrated and used to measure multiple physical quantities, such as magnetic fields [28][29][30][31], displacements [32], accelerations [33][34][35], masses [36][37][38][39], ultrasounds [40][41][42][43], current [44], and temperature [45].…”

Section: Introductionmentioning

confidence: 99%

Microfiber optomechanical torsion sensor

Zhang

Yang

et al. 2023

Front. Phys.

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In this paper, we propose and demonstrate experimentally an optomechanical torsion sensor using a microfiber mechanical resonator. The torsion angle could be obtained by monitoring the resonant frequency shifts of the microfiber resonator. Theoretical and experimental results show that the shift of resonant frequency is non-linear to the torsion angle, and the fundamental mode is more sensitive than other higher modes. The highest sensitivity of the sensor tested in our experiments is 1,687 Hz/degree, and the corresponding resolution of torsion angle is up to 0.0006°, which is 2 orders of magnitude higher than that of the reported fiber-optic torsion sensors. The proposed sensor is a promising candidate for the practical engineering applications.

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Section: Introductionmentioning

confidence: 99%

Microfiber optomechanical torsion sensor

Zhang

Yang

et al. 2023

Front. Phys.

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“…Squeezing far beyond 3 dB.-Recently, it has been shown experimentally that the available single-photon coupling g can range from tens of kHz to tens of MHz [51][52][53][54][55][56][57][58]. These advances allow one to consider the effect of the coupling V in Eq.…”

mentioning

confidence: 99%

Beating the 3 dB Limit for Intracavity Squeezing and Its Application to Nondemolition Qubit Readout

Qin,

Miranowicz,

Nori

2022

Preprint

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While the squeezing of a propagating field can, in principle, be made arbitrarily strong, the cavity-field squeezing is subject to the well-known 3 dB limit, and thus has limited applications. Here, we present a novel method to beat this limit using a fully quantum degenerate parametric amplifier (DPA). Specifically, we show that by simply applying a two-tone driving to the signal mode, the pump mode can, counterintuitively, be driven by the photon loss of the signal mode into a steady squeezed state with, in principle, an arbitrarily high degree of squeezing. Furthermore, we demonstrate that this intracavity squeezing can increase the signal-to-noise ratio of longitudinal qubit readout exponentially with the degree of squeezing. Correspondingly, an improvement of the measurement error by many orders of magnitude can be achieved even for modest parameters. In stark contrast, using intracavity squeezing of the semiclassical DPA cannot practically increase the signal-to-noise ratio and thus improve the measurement error. Our results extend the range of applications of DPAs and open up new opportunities for modern quantum technologies.

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“…Nevertheless, the demanded three-mode phase matching in one resonator is a significant challenge, as pointed out in Ref. [40].…”

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confidence: 99%

“…Our method only needs two-mode phase matching in one resonator. It greatly simplifies its experimental implementation, in comparison with a non-degenerate three-mode matching counterpart [39,40]. In particular, our work proposed the nonreciprocal optical transistor switching a strong signal with a weak control field.…”

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confidence: 99%

Quantum Squeezing Induced Optical Nonreciprocity

Tang,

Chen

et al. 2021

Preprint

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We propose an all-optical approach to achieve optical nonreciprocity on a chip by quantum squeezing one of two coupled resonator modes. By parametric pumping a nonlinear resonator unidirectionally with a classical coherent field, we squeeze the resonator mode in a selective direction due to the phase-matching condition, and induce a chiral photon interaction between two resonators. Based on this chiral interresonator coupling, we achieve an all-optical diode and a three-port quasi-circulator. By applying a second squeezed-vacuum field to the squeezed resonator mode, our nonreciprocal device also works for single-photon pulses. We obtain an isolation ratio of > 40 dB for the diode and fidelity of > 98% for the quasi-circulator, and insertion loss of < 1 dB for both. We also show that nonreciprocal transmission of strong light can be switched on and off by a relative weak pump light. This achievement implies a nonreciprocal optical transistor. Our protocol opens up a new route to achieve integrable all-optical nonreciprocal devices permitting chip-compatible optical isolation and nonreciporcal quantum information processing.

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Efficient Frequency Conversion in a Degenerate χ(2) Microresonator

Cited by 39 publications

References 51 publications

Microfiber optomechanical torsion sensor

Microfiber optomechanical torsion sensor

Beating the 3 dB Limit for Intracavity Squeezing and Its Application to Nondemolition Qubit Readout

Quantum Squeezing Induced Optical Nonreciprocity

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