Abstract

The phase sensitivity of a Mach–Zehnder interferometer utilizing quantum entanglement is analyzed for a coherent state input. The results show that the Heisenberg limit in the measurement of the phase shift is obtainable with a coherent input. Moreover, the scheme turns out to be immune to the imperfect detector efficiencies. This suggests another promising route for implementing sub-shot-noise measurement schemes.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Two-mode quantum interferometry with a single-mode Fock state and parity detection

Shuai Wang, Yaoting Wang, Liangjun Zhai, and Lijian Zhang
J. Opt. Soc. Am. B 35(5) 1046-1053 (2018)

Photon statistics and entanglement in coherent-squeezed linear Mach-Zehnder and Michelson interferometers

Ronen Barak and Yacob Ben-Aryeh
J. Opt. Soc. Am. B 25(3) 361-372 (2008)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (27)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription