Fink, Johannes MIST Austria ; Steffen, L. Kraig ; Studer, Peter ; Bishop, Lev S ; Baur, Matthias P ; Bianchetti, R ; Bozyigit, Deniz ; Lang, C ; Filipp, Stefan ; Leek, Peter J ; Wallraff, Andreas
The quantum properties of electromagnetic, mechanical or other harmonic oscillators can be revealed by investigating their strong coherent coupling to a single quantum two level system in an approach known as cavity quantum electrodynamics (QED). At temperatures much lower than the characteristic energy level spacing the observation of vacuum Rabi oscillations or mode splittings with one or a few quanta asserts the quantum nature of the oscillator. Here, we study how the classical response of a cavity QED system emerges from the quantum one when its thermal occupation-or effective temperature-is raised gradually over 5 orders of magnitude. In this way we explore in detail the continuous quantum-to-classical crossover and demonstrate how to extract effective cavity field temperatures from both spectroscopic and time-resolved vacuum Rabi measurements.
Physical Review Letters
This work was supported by SNF, EuroSQIP and ETHZ. L. S. B. acknowledges support by LPS/NSA under ARO contract No. W911NF-05-1-0365 and the NSF under grant No. DMR-0653377
Fink JM, Steffen L, Studer P, et al. Quantum-to-classical transition in cavity quantum electrodynamics. Physical Review Letters. 2010;105(16). doi:10.1103/PhysRevLett.105.163601
Fink, J. M., Steffen, L., Studer, P., Bishop, L., Baur, M., Bianchetti, R., … Wallraff, A. (2010). Quantum-to-classical transition in cavity quantum electrodynamics. Physical Review Letters, 105(16). https://doi.org/10.1103/PhysRevLett.105.163601
Fink, Johannes M, L. Steffen, Peter Studer, Lev Bishop, Matthias Baur, R Bianchetti, Deniz Bozyigit, et al. “Quantum-to-Classical Transition in Cavity Quantum Electrodynamics.” Physical Review Letters 105, no. 16 (2010). https://doi.org/10.1103/PhysRevLett.105.163601.
J. M. Fink et al., “Quantum-to-classical transition in cavity quantum electrodynamics,” Physical Review Letters, vol. 105, no. 16, 2010.
Fink JM, Steffen L, Studer P, Bishop L, Baur M, Bianchetti R, Bozyigit D, Lang C, Filipp S, Leek P, Wallraff A. 2010. Quantum-to-classical transition in cavity quantum electrodynamics. Physical Review Letters. 105(16).
Fink, Johannes M., et al. “Quantum-to-Classical Transition in Cavity Quantum Electrodynamics.” Physical Review Letters, vol. 105, no. 16, American Physical Society, 2010, doi:10.1103/PhysRevLett.105.163601.
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