Continuous mode cooling and phonon routers for phononic quantum networks
arXiv:1205.7008 · doi:10.1088/1367-2630/14/11/115004
Abstract
We study the implementation of quantum state transfer protocols in phonon networks, where in analogy to optical networks, quantum information is transmitted through propagating phonons in extended mechanical resonator arrays or phonon waveguides. We describe how the problem of a non-vanishing thermal occupation of the phononic quantum channel can be overcome by implementing optomechanical multi- and continuous mode cooling schemes to create a 'cold' frequency window for transmitting quantum states. In addition, we discuss the implementation of phonon circulators and switchable phonon routers, which rely on strong coherent optomechanical interactions only, and do not require strong magnetic fields or specific materials. Both techniques can be applied and adapted to various physical implementations, where phonons coupled to spin or charge based qubits are used for on-chip networking applications.
33 pages, 8 figures. Final version, a few minor changes and updated references
References in corpus (20)
- The Quantum Internet
- Sideband Cooling Micromechanical Motion to the Quantum Ground State
- Optomechanically induced transparency
- Electromagnetically Induced Transparency and Slow Light with Optomechanics
- Strong dispersive coupling of a high finesse cavity to a micromechanical membrane
- Quantum Theory of Cavity-Assisted Sideband Cooling of Mechanical Motion
- Theory of ground state cooling of a mechanical oscillator using dynamical back-action
- Radiation-pressure cooling and optomechanical instability of a micro-mirror
- Self-cooling of a micro-mirror by radiation pressure
- An Elementary Quantum Network of Single Atoms in Optical Cavities
- Cavity Optomechanics
- Resolved Sideband Cooling of a Micromechanical Oscillator
- Large Quantum Superpositions and Interference of Massive Nanometer-Sized Objects
- Opto-mechanical transducers for long-distance quantum communication
- Time-reversal symmetry breaking in circuit-QED based photon lattices
- Nuclear Magnetic Resonance Imaging with 90 nm Resolution
- Optical dilution and feedback cooling of a gram-scale oscillator to 6.9 mK
- Design of Optomechanical Cavities and Waveguides on a Simultaneous Bandgap Phononic-Photonic Crystal Slab
- Controllable Coupling between Flux Qubit and Nanomechanical Resonator by Magnetic Field
- Ground state cooling of a nanomechanical resonator via a Cooper pair box qubit