Noise-Free Measurement of Harmonic Oscillators with Instantaneous Interactions
- 8 January 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 98 (2), 020401
- https://doi.org/10.1103/physrevlett.98.020401
Abstract
We present a method of measuring the quantum state of a harmonic oscillator through instantaneous probe-system selective interactions of the Jaynes-Cummings type. We prove that this scheme is robust to general decoherence mechanisms, allowing the possibility of measuring fast-decaying systems in the weak-coupling regime. This method could be applied to different setups: motional states of trapped ions, microwave fields in cavity or circuit QED, and even intracavity optical fields.Keywords
Other Versions
This publication has 17 references indexed in Scilit:
- Instantaneous measurement of field quadrature moments and entanglementThe European Physical Journal D, 2006
- Measure of phonon-number moments and motional quadratures through infinitesimal-time probing of trapped ionsJournal of Physics B: Atomic, Molecular and Optical Physics, 2006
- Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamicsNature, 2004
- Fresnel Representation of the Wigner Function: An Operational ApproachPhysical Review Letters, 2003
- Quantum dynamics of single trapped ionsReviews of Modern Physics, 2003
- Direct Measurement of the Wigner Function of a One-Photon Fock State in a CavityPhysical Review Letters, 2002
- Manipulating quantum entanglement with atoms and photons in a cavityReviews of Modern Physics, 2001
- Method for Direct Measurement of the Wigner Function in Cavity QED and Ion TrapsPhysical Review Letters, 1997
- Experimental Determination of the Motional Quantum State of a Trapped AtomPhysical Review Letters, 1996
- Density Operators and Quasiprobability DistributionsPhysical Review B, 1969