Long-range quantum gates using dipolar crystals

Abstract

We propose the use of dipolar spin chains to enable long-range quantum logic between distant qubits. In our approach, an effective interaction between remote qubits is achieved by adiabatically following the ground state of the dipolar chain across the paramagnet to crystal phase transition. We demonstrate that the proposed quantum gate is particularly robust against disorder and derive scaling relations, showing that high-fidelity qubit coupling is possible in the presence of realistic imperfections. Possible experimental implementations in systems ranging from ultracold Rydberg atoms to arrays of Nitrogen-Vacancy defect centers in diamond are discussed.

5 pages, 3 figures

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Cited by in corpus (20)

• Topological phases in ultracold polar-molecule quantum magnets
• One decade of quantum optimal control in the chopped random basis
• High-density quantum sensing with dissipative first order transitions
• Driven-dissipative dynamics of a strongly interacting Rydberg gas
• Initialization of quantum simulators by sympathetic cooling
• Non-adiabatic preparation of spin crystals with ultracold polar molecules
• Collectively Enhanced Interactions in Solid-state Spin Qubits
• Parallel entangling gate operations and two-way quantum communication in spin chains
• Polaritonic Tamm states induced by cavity photons
• Beating no-go theorems by engineering defects in quantum spin models
• Quantum gates with weak van der Waals interactions of neutral Rydberg atoms
• Two-qubit entangling gates between distant atomic qubits in a lattice
• Tailored jump operators for purely dissipative quantum magnetism
• Quantum gates between distant atoms mediated by a Rydberg excitation antiferromagnet
• Quantum Zeno-based Detection and State Engineering of Ultracold Polar Molecules
• Stability of dipolar bosons in a quasiperiodic potential
• String order in dipole-blockaded quantum liquids
• Long range universal quantum computation in large-size coupled cavity array independent of cavity number
• Implementing a Fast Unbounded Quantum Fanout Gate Using Power-Law Interactions
• Entropy production and statistical relaxation of dipolar bosons and fermions in interaction quench dynamics