TY - JOUR
T1 - Control of temperature and entropy by frequent quantum measurements
AU - Gordon, G.
AU - Erez, N.
AU - Kurizki, G.
N1 - Funding Information:
ACKNOWLEDGMENTS We acknowledge the support of ISF, GIF and EC (SCALA IP).
PY - 2010/3
Y1 - 2010/3
N2 - We study deviations from thermal equilibrium between two-level systems (TLS) and a bath by frequent and brief quantum measurements of the TLS energy-states. The resulting entropy and temperature of both the system and the bath are found to be completely determined by the measurement rate, and unrelated to what is expected by standard thermodynamical rules that hold for Markovian baths. These anomalies allow for very fast control heating, cooling and state-purification (entropy reduction) of quantum systems much sooner than their thermal equilibration time.
AB - We study deviations from thermal equilibrium between two-level systems (TLS) and a bath by frequent and brief quantum measurements of the TLS energy-states. The resulting entropy and temperature of both the system and the bath are found to be completely determined by the measurement rate, and unrelated to what is expected by standard thermodynamical rules that hold for Markovian baths. These anomalies allow for very fast control heating, cooling and state-purification (entropy reduction) of quantum systems much sooner than their thermal equilibration time.
UR - http://www.scopus.com/inward/record.url?scp=77951026516&partnerID=8YFLogxK
U2 - 10.1134/S0030400X10030136
DO - 10.1134/S0030400X10030136
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AN - SCOPUS:77951026516
VL - 108
SP - 400
EP - 406
JO - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
JF - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
SN - 0030-400X
IS - 3
ER -