Quantum Nano-Electro-Mechanical Systems (QNEMS) Kurt Jacobs

These are systems in which nano-mechanical resonators, fabricated on a wafer and with frequencies in the
hundreds of MHz, are coupled to electrical elements, such as Cooper-Pair Boxes and superconducting stripline
resonators. These NEMS devices can be constucted to realise a range of interesting qauntum dynamics that was 
previously the domain of atom optics and cavity QED. They also have the potential for realising superpositons
of macroscopic mechanical systems for the first time (thus putting the "quantum" into "mechanics"), and other
signatures of quantum motion such as quantum jumps.

Publications: 

  1. Ultra-Efficient Cooling of Resonators: Beating Sideband Cooling with Quantum Control 
    X. Wang, S. Vinjanampathy, F. W. Strauch, and K. Jacobs
    Phys. Rev. Lett. 107, 177204 (2011) arXiv:1103.5750

  2. Engineering Giant Nonlinearities in Quantum Nanosystems 
    K. Jacobs and A. J. Landahl
    Phys. Rev. Lett. 103, 067201 (2009) arXiv:0809.2993

  3. Engineering Superposition States and Tailored Probes for Nanoresonators via Open-Loop Control
    K. Jacobs, L. Tian, and J. Finn
    Phys. Rev. Lett. 102, 057208 (2009) arXiv:0807.5132

  4. Back-action evasion and squeezing of a mechanical resonator using a cavity detector
    A. A. Clerk, F. Marquardt, and K. Jacobs  
    New. J. Phys. 10, 095010 (2008) arXiv:0802.1842

  5. Energy measurements and preparation of canonical phase states of a nanomechanical resonator
    K. Jacobs, A. N. Jordan and E. K. Irish
    Europhys. Lett. 82, 18003 (2008) arXiv:0707.3803

  6. Emergent quantum jumps in a nano-electro-mechanical system
    K. Jacobs and P. Lougovski  
    J. Phys A: Math Theor. 40, F987 (2007) quant-ph/0606060

  7. Engineering Quantum States of a Nanoresonator via a Simple Auxiliary System  
    K. Jacobs   
    Phys. Rev. Lett. 99, 117203 (2007) arXiv:0707.3803 
     
  8. Continuous Measurement of the Energy Eigenstates of a Nano-Mechanical Resonator  
    without a Non-Demolition Probe  
    K. Jacobs, P. Lougovski and M. Blencowe
    Phys. Rev. Lett. 98, 147201 (2007) quant_ph/0607102
     
  9. Feedback Cooling of a Nano-Mechanical Resonator 
    A. Hopkins, K. Jacobs, S. Habib and K. Schwab
    Phys. Rev. B 68, 235328 (2003) quant_ph/0302529 
     
Kurt Jacobs / Department of Physics / Umass Boston