We propose a simple idea for realizing a quantum gate with two fermions in a double well trap via external optical pulses without addressing the atoms individually. The key components of the scheme are Feshbach resonance and Pauli blocking, which decouple unwanted states from the dynamics. As a physical example we study atoms in the presence of a magnetic Feshbach resonance in a nanoplasmonic trap and discuss the constraints on the operation times for realistic parameters, reaching a fidelity above 99.9% within 42μs, much shorter than existing atomic gate schemes. © 2014 American Physical Society.
Jachymski K., Idziaszek Z., Calarco T. (2014). Fast quantum gate via Feshbach-Pauli blocking in a nanoplasmonic trap. PHYSICAL REVIEW LETTERS, 112(25), 1-5 [10.1103/PhysRevLett.112.250502].
Fast quantum gate via Feshbach-Pauli blocking in a nanoplasmonic trap
Calarco T.
2014
Abstract
We propose a simple idea for realizing a quantum gate with two fermions in a double well trap via external optical pulses without addressing the atoms individually. The key components of the scheme are Feshbach resonance and Pauli blocking, which decouple unwanted states from the dynamics. As a physical example we study atoms in the presence of a magnetic Feshbach resonance in a nanoplasmonic trap and discuss the constraints on the operation times for realistic parameters, reaching a fidelity above 99.9% within 42μs, much shorter than existing atomic gate schemes. © 2014 American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
