Improving Kerr QND measurement sensitivity via squeezed light
- URL: http://arxiv.org/abs/2210.00857v2
- Date: Mon, 14 Aug 2023 09:58:25 GMT
- Title: Improving Kerr QND measurement sensitivity via squeezed light
- Authors: Stepan Balybin and Dariya Salykina and Farid Ya. Khalili
- Abstract summary: We show that by using a squeezed quantum state of the probe beam and the anti-squeezing beam at the output of the microresonator, it is possible to reduce the measurement imprecision by about one order of magnitude.
The resulting sensitivity allows to generate and verify multi-photon non-Gaussian quantum states of light.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In ref [Phys. Rev. A 106, 013720], the scheme of quantum non-demolition
measurement of optical quanta that uses a resonantly enhanced Kerr nonlinearity
in optical microresonators was analyzed theoretically. It was shown that using
the modern high-Q microresonators, it is possible to achieve the sensitivity
several times better than the standard quantum limit. Here we propose and
analyze in detail a significantly improved version of that scheme. We show,
that by using a squeezed quantum state of the probe beam and the anti-squeezing
(parametric amplification) of this beam at the output of the microresonator, it
is possible to reduce the measurement imprecision by about one order of
magnitude. The resulting sensitivity allows to generate and verify multi-photon
non-Gaussian quantum states of light, making the scheme considered here
interesting for the quantum information processing tasks.
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