Measuring irreversible dynamics of a quantum harmonic oscillator

Giovanna Morigi; E. Solano; Berthold Georg Englert; Herbert Walther

Measuring irreversible dynamics of a quantum harmonic oscillator

Giovanna Morigi
, E. Solano
, Berthold Georg Englert
, Herbert Walther

Max Planck Institute of Quantum Optics
Pontificia Universidad Católica del Perú

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We show that the unitary evolution of a harmonic oscillator coupled to a two-level system can be undone by a suitable manipulation of the two-level system—more specifically, by a quasi-instantaneous phase change. This enables us to isolate the dissipative evolution to which the oscillator may be exposed in addition. With this method we study the decoherence time of a photon mode in cavity QED, and that of the quantized harmonic motion of trapped ions. We comment on the relation to spin echoes and multipath interferometry. © 2002 The American Physical Society.

Original language	Spanish
Journal	Physical Review A: atomic, molecular, and optical physics
Volume	65
State	Published - 1 Jan 2002
Externally published	Yes

Cite this

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abstract = "We show that the unitary evolution of a harmonic oscillator coupled to a two-level system can be undone by a suitable manipulation of the two-level system—more specifically, by a quasi-instantaneous phase change. This enables us to isolate the dissipative evolution to which the oscillator may be exposed in addition. With this method we study the decoherence time of a photon mode in cavity QED, and that of the quantized harmonic motion of trapped ions. We comment on the relation to spin echoes and multipath interferometry. {\textcopyright} 2002 The American Physical Society.",

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AU - Morigi, Giovanna

AU - Solano, E.

AU - Englert, Berthold Georg

AU - Walther, Herbert

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N2 - We show that the unitary evolution of a harmonic oscillator coupled to a two-level system can be undone by a suitable manipulation of the two-level system—more specifically, by a quasi-instantaneous phase change. This enables us to isolate the dissipative evolution to which the oscillator may be exposed in addition. With this method we study the decoherence time of a photon mode in cavity QED, and that of the quantized harmonic motion of trapped ions. We comment on the relation to spin echoes and multipath interferometry. © 2002 The American Physical Society.

AB - We show that the unitary evolution of a harmonic oscillator coupled to a two-level system can be undone by a suitable manipulation of the two-level system—more specifically, by a quasi-instantaneous phase change. This enables us to isolate the dissipative evolution to which the oscillator may be exposed in addition. With this method we study the decoherence time of a photon mode in cavity QED, and that of the quantized harmonic motion of trapped ions. We comment on the relation to spin echoes and multipath interferometry. © 2002 The American Physical Society.

M3 - Artículo

SN - 2469-9926

VL - 65

JO - Physical Review A: atomic, molecular, and optical physics

JF - Physical Review A: atomic, molecular, and optical physics

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