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- W3120159575 abstract "Quantum metrology is the use of genuinely properties such as entanglement as a resource to outperform classical sensing strategies. Typically, entanglement is created by implementing gate operations or inducing many-body interactions. However, existing sensing schemes with these approaches require accurate control of the probe system such as switching on/off the interaction among qubits, which can be challenging for practical applications. Here, we propose an entanglement-enhanced sensing scheme with an always-on nearest-neighbor interaction between qubits. We adopt the transverse field Ising chain as the probe system, and make use of the so-called quantum domino dynamics for the generation of the entangled states. In addition to the advantage that our scheme can be implemented without controlling the interactions, it only requires initialization of the system, projective measurements on a single qubit, and control of the uniform magnetic fields. We can achieve an improved sensitivity beyond the standard limit even under the effect of realistic decoherence." @default.
- W3120159575 created "2021-01-18" @default.
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- W3120159575 date "2021-01-08" @default.
- W3120159575 modified "2023-09-27" @default.
- W3120159575 title "Entanglement-enhanced sensing with an always-on nearest-neighbor interaction between qubits" @default.
- W3120159575 hasPublicationYear "2021" @default.
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