Gravitational decoherence of atomic interferometers
نویسندگان
چکیده
We study the decoherence of atomic interferometers due to the scattering of stochastic gravitational waves. We evaluate the ‘direct’ gravitational effect registered by the phase of the matter waves as well as the ‘indirect’ effect registered by the light waves used as beam-splitters and mirrors for the matter waves. Considering as an example the space project HYPER, we show that both effects are negligible for the presently studied interferometers. PACS. 03.65.Yz Decoherence; open systems; quantum statistical methods – 03.75.-b Matter waves – 04.30.-w Gravitational waves: theory
منابع مشابه
Comparative Sensitivities of Gravitational Wave Detectors based on Atom Interferometers and Light Interferometers
iNe consider a class of proposed gravitational wave detectors based on multiple atomic interferometers separated by large baselines and referenced by common laser systems. We compute the sensitivity limits of these detectors due to intrinsic phase noise of the light sources, non-inertial motion of the light sources, and atomic shot noise and compare them to sensitivity limits for traditional li...
متن کاملAtomic Sensors – A Review
We discuss the basic physics and instrumentation issues related to high-performance physical and inertial sensors based on atomic spectroscopy. Recent work on atomic magnetometers, NMR gyroscopes, and atom interferometers is reviewed, with a focus on precision sensing of electromagnetic and gravitational fields and inertial motion. Atomic sensors have growing relevance to many facets of modern ...
متن کاملFeedback control of trapped coherent atomic ensembles.
We demonstrate how to use feedback to control the internal states of trapped coherent ensembles of two-level atoms, and to protect a superposition state against the decoherence induced by a collective noise. Our feedback scheme is based on weak optical measurements with negligible backaction followed by coherent microwave manipulations. The efficiency of the feedback system is studied for a sim...
متن کاملSearching for stochastic gravitational-wave background with the co-located LIGO interferometers
This paper presents techniques developed by the LIGO Scientic Collaboration to search for the stochastic gravitational-wave background using the co-located pair of LIGO interferometers at Hanford, WA. We use correlations between interferometers and environment monitoring instruments, as well as time-shifts between two interferometers (described here for the first time) to identify correlated no...
متن کاملQuantum Noise in Gravitational-wave Interferometers
We present an overview of quantum noise in gravitational wave interferometers. Current gravitational wave detectors are modified variants of a Michelson interferometer and the quantum noise limits are strongly influenced by the optical configuration of the interferometer. We describe recent developments in the treatment of quantum noise in the complex interferometers of present-day and future g...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002