luis a. correa
TRANSCRIPT
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CLASSICAL EMULATIONOF
QUANTUM-COHERENTTHERMAL MACHINES
LUIS A. CORREA
Charge and Energy TransferProcesses—Open Problems in Open Quantum Systems
BIRS, August 20th 2019
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J. ONAM GONZÁLEZ
JOSÉ P. PALAO
DANIEL ALONSO
La laguna(spain)
Phys. Rev. E 99, 062102 (2019)
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COMPUTING
CRYPTOGRAPHY
METROLOGY
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QUANTUM
QUANTUM
QUANTUM
COMPUTING
CRYPTOGRAPHY
METROLOGY
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QUANTUM
QUANTUM
QUANTUM
COMPUTING
CRYPTOGRAPHY
METROLOGY
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THERMODYNAMICS
QUANTUM
QUANTUM
QUANTUM
QUANTUM
COMPUTING
CRYPTOGRAPHY
METROLOGY
?
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QUANTUM THERMODYNAMICS
Describing individual (open) quantum systems in thermodynamic language and take the analogy as far as possible to try to learn about the emergence of thermodynamics from quantum theory.
What is quantum thermodynamics about?
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Does QUANTUMness
?play any rôle
in the thermodynamics of quantum systems
QUANTUM THERMODYNAMICS
THERMODYNAMICS IN THE QUANTUM REGIME
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...BUT WHICH “QUANTUMNESS”?
Energy-levelstructure
Quantum correlations
JOINT PROBABILITY DISTR.
Quantum Reservoir engineeringL.A.C. et al., Sci. Rep. (2014)
Abah & Lutz, EPL (2014)
Gelbwaser-Klimovsky et al., PRE (2013)
Brunner et al., PRE (2014)
L.A.C. et al., PRE (2013)
Brask & Brunner, PRE (2015)
Reid et al., EPL (2017)
Strasberg & García Díaz, PRA (2019)
Friedenberger & Lutz, EPL (2017)
. . .
. . .
. . .
Silva et al., PRE (2016). . .
L.A.C. et al., PRE (2014)Niedenzu et al., PRE (2015)
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Quantumcoherence
Is Quantum coherence?
reallynecessary
...BUT WHICH “QUANTUMNESS”?
Anatoly et al., PRA (2011)
Scully et al., Science (2003) Scully, PRL (2010)
Holubec & Novotny, J. Low. Temp. Phys. (2018)
Killoran et al., JCP (2015)Mitchison et al., NJP (2015)
Klatzow et al., PRL (2019)
Kilgour & Segal, PRE (2018) Uzdin et al., PRX (2015)
. . .
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OUTLINE
Motivation
Two quantum-coherent models
How to build a “classical emulator”
1.
2.
3.
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POWER-DRIVEN CHILLER
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Markov–Floquet master eq.
Szczygielski, J. Math. Phys. (2014)Breuer & Petruccione (2002)
POWER-DRIVEN CHILLER
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Local master equation
González et al., Open Sys. Inf. Dyn. (2017)
POWER-DRIVEN CHILLER
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POWER-DRIVEN CHILLER
Alicki, J. Phys. A (1979)
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POWER-DRIVEN CHILLER
The energy-converstion rate is proportional to the steady-state coherence
The device is endoreversible✱
✱
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HYBRID CHILLER
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POWER-DRIVEN vs. HYBRID
R
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POWER-DRIVEN vs. HYBRID
R
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OUTLINE
Motivation
Two quantum-coherent models
How to build a “classical emulator”
1.
2.
3.
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Local master equation in the (bare) energy basis
3-STATE EMULATOR
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Stationary solution
3-STATE EMULATOR
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Stationary populations
3-STATE EMULATOR
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Classical emulator
3-STATE EMULATOR
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THERMODYNAMIC EQUIVALENCEClassical emulator
1
2
3
Coherent chiller
?
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THERMODYNAMIC EQUIVALENCEClassical emulator
1
2
3
Schnackenberg, RMP (1976)Hill, J. Theoret. Biol. (1966) González et al., Entropy (2016)
González et al., NJP (2017)
Coherent chiller
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COHERENT OR INCOHERENT?
Cyclic weakly-driven (coherent) heat devices can all be emulated classically. Quantum coherence is not necessary to explain their thermodynamic behaviour.
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TRULY QUANTUM?
Are there coherent models that cannot be emulated classically ?
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TRULY QUANTUM
Dorfman, et al. PRE (2018)
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TRULY QUANTUM
1
2 3
4
Not always positive!
Quantum is NOT better?!
Dorfman, et al. PRE (2018)
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OUTLINE
Motivation
Two quantum-coherent models
How to build a “classical emulator”
1.
2.
3.
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Thanks for your attention!
Phys. Rev. E 99, 062102 (2019)
...IS IT QUANTUM OR CLASSICAL?