Journal
PHYSICAL REVIEW A
Volume 104, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.104.032407
Keywords
-
Categories
Funding
- Dutch Research Council (NWO) [680.91.033]
Ask authors/readers for more resources
We propose a scheme for preparing Dicke states using global control of N spin qubits, based on the standard phase estimation algorithm. The scheme involves collectively coupling the spins to an ancilla qubit via ZZ interaction for non-deterministic state preparation. Potential applications include magnetic sensing using electronic spins coupled to a superconducting flux qubit, with analysis of noise and limitations in the scheme.
We present a Dicke state preparation scheme which uses global control of N spin qubits: our scheme is based on the standard phase estimation algorithm, which estimates the eigenvalue of a unitary operator. The scheme prepares a Dicke state nondeterministically by collectively coupling the spins to an ancilla qubit via a ZZ interaction, using inverted right perpendicularlog(2) Ninverted left perpendicular + 1 ancilla qubit measurements. The preparation of such Dicke states can be useful if the spins in the ensemble are used for magnetic sensing: we discuss a possible realization using an ensemble of electronic spins located at diamond nitrogen-vacancy centers coupled to a single superconducting flux qubit. We also analyze the effect of noise and limitations in our scheme.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available