Parity meter for charge qubits: an efficient quantum entangler

Details Parity meter for charge qubits: an efficient quantum entangler Parity meter for charge qubits: an efficient quantum entangler

2006-02-22

arxiv.org/abs/cond-mat/0602514v2

Phys. Rev. B 73, 235331 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 4 figures; v2: discussion of measurement time, references added

Scientific paper

10.1103/PhysRevB.73.235331

We propose a realization of a charge parity meter based on two double quantum dots alongside a quantum point contact. Such a device is a specific example of the general class of mesoscopic quadratic quantum measurement detectors previously investigated by Mao et al. [Phys. Rev. Lett. 93, 056803 (2004)]. Our setup accomplishes entangled state preparation by a current measurement alone, and allows the qubits to be effectively decoupled by pinching off the parity meter. Two applications of the parity meter are discussed: the measurement of Bell's inequality in charge qubits and the realization of a controlled NOT gate.

Affiliated with

Also associated with

No associations

Rating

Parity meter for charge qubits: an efficient quantum entangler does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Parity meter for charge qubits: an efficient quantum entangler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parity meter for charge qubits: an efficient quantum entangler will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-88769