Heisenberg-limited interferometry with pair coherent states and parity measurements
Source: Phys. Rev. A 82, 013831 (2010); doi:10.1103/PhysRevA.82.013831
Published 26 July 2010
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Research ToolkitPACS
- 42.50.St
Nonclassical interferometry, subwavelength lithography (quantum optics) - 42.50.Dv
Quantum state engineering and measurements (quantum optics) - 42.50.Ex
Optical implementations of quantum information processing and transfer - 42.50.Lc
Quantum fluctuations, quantum noise, and quantum jumps (quantum optics) - YEAR: 2010
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APS
After reviewing parity-measurement-based interferometry with twin Fock states, which allows for supersensitivity (Heisenberg limited) and super-resolution, we consider interferometry with two different superpositions of twin Fock states, namely, two-mode squeezed vacuum states and pair coherent states. This study is motivated by the experimental challenge of producing twin Fock states on opposite sides of a beam splitter. We find that input two-mode squeezed states, while allowing for Heisenberg-limited sensitivity, do not yield super-resolutions, whereas both are possible with input pair coherent states.
©2010 The American Physical Society
| History: | Received 20 May 2010; published 26 July 2010 |
| Permalink: |
http://link.aps.org/abstract/PRA/v82/e013831 |
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