Qubit-Coupled Mechanics - IFSC

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Approaching the Ground State Cleland et al., Nature, 2010 Dilatational oscillator ω 0 2π ~ 6 GGG! k B T ħω 0 ~1 at ~ 300 mm! Cleland et al. put this device on a dilution refrigerator and cooled it down so that N tt < . 1!
Approaching the Ground State: Back-Action Cooling Use the measurement process to cool mechanical mode! Schwab et al. Nature 2010 Micro ‘drum head’ Teufel et al. Nature 2011 N tt = 3. 8 Coherent State Transfer Palomaki et al. Nature 2013 N tt =0.34 Observation of zero-point fluctuations Safavi-Naeini et al. PRL 2012 Optomechanical crystal Chan, Alegre, et al. Nature 2011 In these examples, a mechanical mode is coupled to EM cavity, which does work on the mode cooling it below environment T *See M.Poot & H.S. van der Zant, Physics Reports, for a recent and comprehensive review * N tt =0.85
Page 1 and 2: Qubit-Coupled Mechanics Matt LaHaye
Page 3 and 4: Mechanical Systems in the Quantum R
Page 5 and 6: What do We Hope to Accomplish With
Page 7 and 8: The Future: Quantum Machines?
Page 9 and 10: What does it take to get to the qua
Page 11 and 12: Thermal Noise E Energy Spectrum The
Page 13: Chasing the Ground State Cooling th
Page 17 and 18: Limitations of Linear Displacement
Page 19 and 20: Schematic of Coupling Between a Coo
Page 21 and 22: Schematic of Coupling Between a Coo
Page 23 and 24: The Dispersive Coupling Limit Inter
Page 25 and 26: First Realization of Qubit-Coupled
Page 27 and 28: Milestone in Quantum Measurement Na
Page 29 and 30: The Dispersive Coupling Limit *See:
Page 31 and 32: Engineering the qubit read-out: Emb
Page 33 and 34: Present Status of Our Efforts at Sy
Page 35 and 36: LC Circuit Read-out of Qubit vs. Ap
Page 37 and 38: Details of the UHF Flexural Nanomec
Page 39 and 40: LC Read-out of Qubit: Two-Tone Spec
Page 41 and 42: Two-Tone Spectroscopy - ‘Extra’

Qubit-Coupled Mechanics - IFSC

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