A special laser configuration designs a quantum interference that can cool to vanishing phonon occupation up to first order in the Lamb-Dicke parameter expansion. It hence eliminates the blue sideband in addition to the carrier transition, thus excluding any heating process involving up to one-phonon dynamics. It is applicable to trapped ions, atoms or cantilevers. The underlying combined action of two cooling schemes makes the proposal very stable under fluctuations of the physical parameters such as laser intensity or detuning, making it a viable candidate for experimental implementation. Furthermore, it performs faster than existing ground state cooling schemes, overcoming one of the limitations of current quantum information processing implementations.
- ITP and the Center of QuantumBioSciences is part of newly approved Collaborative Research Center 1279
- The work of the Institute was mentioned in The Economist
- Congratulations to Jorge Casanova for winning a “Forschungsbonus”!
- Summer BBQ
- The paper “Ultrasensitive magnetometer using a single atom” was selected as a PRL EDITORS’ SUGGESTION
Most Recent Papers
•Quantum – coherent dynamics in photosynthetic charge separation revealed by wavelet analysis, Nature Scientific Reports, 7, 2890 (2017)
•Submillihertz magnetic spectroscopy performed with a nanoscale quantum sensor, Science, 356, 832 (2017)
•Scheme for Detection of Single-Molecule Radical Pair Reaction Using Spin in Diamond, Physical Review Letters, 118, 200402 (2017)
Institute of Theoretical Physics
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