Abstract
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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Funding
GS, KMM and TK acknowledge UGC for the UGC Research Fellowship. AKP and DKM acknowledge financial support from the Science & Engineering Research Board (SERB), New Delhi for the CRG Grant (CRG/2021/005917). DKM acknowledges financial support under the Incentive Grant of Institution of Eminence (IoE), Banaras Hindu University, Varanasi, India.
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Shukla, G., Mishra, K.M., Pandey, A.K. et al. 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. Opt Quant Electron 55, 460 (2023). https://doi.org/10.1007/s11082-023-04724-w
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DOI: https://doi.org/10.1007/s11082-023-04724-w