Improvement in phase-sensitivity of a Mach–Zehnder interferometer with the superposition of Schrödinger’s cat-like state with vacuum state as an input under parity measurement

被引：0
作者：
Gaurav Shukla
Krishna Mohan Mishra
Aviral Kumar Pandey
Taj Kumar
Hemendra Pandey
Devendra Kumar Mishra
机构：
[1] Banaras Hindu University,Department of Physics, Institute of Science
[2] Variable Energy Cyclotron Centre,undefined
来源：
Optical and Quantum Electronics | 2023年 / 55卷 / 5期
关键词：
Quantum metrology; Quantum interferometry; Schrödinger’s cat-like state; Phase sensitivity; Parity measurement;
D O I：
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摘要：
We study the improvement in the phase sensitivity of a Mach–Zehnder interferometer (MZI) using the superposition of ‘Schrödinger’s cat-like state with the vacuum state (SCVS)' and the vacuum state as inputs. With this setup, we examine the effect on the phase sensitivity of the interferometer using a parity detection scheme. We find better phase sensitivity under some conditions for this setup having potential application in quantum sensing.
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