Abstract
The study and control of coherence in quantum systems is one of the most exciting recent developments in physics. Quantum coherence plays a crucial role in emerging quantum technologies as well as fundamental experiments. A major obstacle to the utilization of quantum effects is decoherence, primarily in the form of dephasing that destroys quantum coherence, and leads to effective classical behavior. We show that there are universal relationships governing dephasing that constrain the relative rates at which quantum correlations can disappear. These lead effectively to speed limits which become especially important in multipartite systems.
| Original language | English |
|---|---|
| Article number | 012121 |
| Pages (from-to) | - |
| Number of pages | 7 |
| Journal | Physical Review A |
| Volume | 86 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 26 Jul 2012 |
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Keywords
- quantum coherence
- quantum systems
- multipartite systems
Cite this
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Limits on the decay rate of quantum coherence and correlation. / Oi, Daniel K. L.; Schirmer, Sophie G.
In: Physical Review A, Vol. 86, No. 1, 012121, 26.07.2012, p. -.Research output: Contribution to journal › Article
TY - JOUR
T1 - Limits on the decay rate of quantum coherence and correlation
AU - Oi, Daniel K. L.
AU - Schirmer, Sophie G.
PY - 2012/7/26
Y1 - 2012/7/26
N2 - The study and control of coherence in quantum systems is one of the most exciting recent developments in physics. Quantum coherence plays a crucial role in emerging quantum technologies as well as fundamental experiments. A major obstacle to the utilization of quantum effects is decoherence, primarily in the form of dephasing that destroys quantum coherence, and leads to effective classical behavior. We show that there are universal relationships governing dephasing that constrain the relative rates at which quantum correlations can disappear. These lead effectively to speed limits which become especially important in multipartite systems.
AB - The study and control of coherence in quantum systems is one of the most exciting recent developments in physics. Quantum coherence plays a crucial role in emerging quantum technologies as well as fundamental experiments. A major obstacle to the utilization of quantum effects is decoherence, primarily in the form of dephasing that destroys quantum coherence, and leads to effective classical behavior. We show that there are universal relationships governing dephasing that constrain the relative rates at which quantum correlations can disappear. These lead effectively to speed limits which become especially important in multipartite systems.
KW - quantum coherence
KW - quantum systems
KW - multipartite systems
UR - http://www.scopus.com/inward/record.url?scp=84864483198&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.86.012121
DO - 10.1103/PhysRevA.86.012121
M3 - Article
VL - 86
SP - -
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 1
M1 - 012121
ER -