Publications (133)
Rapid state purification protocols for a Cooper pair box
E. J. Griffith, C. D. Hill, J. F. Ralph +2
We propose techniques for implementing two different rapid state purification schemes, within the constraints present in a superconducting charge qubit system. Both schemes use a c…
Steady-state microwave mode cooling with a diamond NV ensemble
Donald P. Fahey, Kurt Jacobs, Matthew J Turner +4
A fundamental result of quantum mechanics is that the fluctuations of a bosonic field are given by its temperature . An electromagnetic mode with frequency in the microwave…
Efficient measurements, purification, and bounds on the mutual information
Kurt Jacobs
When a measurement is made on a quantum system in which classical information is encoded, the measurement reduces the observers average Shannon entropy for the encoding ensemble. T…
Comment on "Non-monotonicity in the Quantum-Classical Transition: Chaos Induced by Quantum Effects"
Justin Finn, Kurt Jacobs, Bala Sundaram
In a recent Letter [PRL 101, 074101 (2008)], Kapulkin and Pattanayak presented evidence that a quantum Duffing oscillator, sufficiently damped so that it is not classically chaotic…
Driven Imposters: Controlling Expectations in Many-Body Systems
Gerard McCaul, Christopher Orthodoxou, Kurt Jacobs +2
We present a framework to control and track the observables of a general solid state system driven by an incident laser field. The main result is a non-linear equation of motion fo…
Absolute Dynamical Limit to Cooling Weakly-Coupled Quantum Systems
X. Wang, Sai Vinjanampathy, Frederick W. Strauch +1
Cooling of a quantum system is limited by the size of the control forces that are available (the "speed" of control). We consider the most general cooling process, albeit restricte…