Universal quantum computation based on Nano-Electro-Mechanical Systems

Abstract

We propose to use a buckled plate as a qubit, where a double-well potential is mechanically produced by pushing the plate from both the sides. The right and left positions of the plate are assigned to be quantum states $|0⟩$ and $|1⟩$. Quantum effects emerge when the displacement is of the order of picometers, although the size of a buckled plate is of the order of $1\mu m$. The NOT gate is executed by changing the buckling force acting on the plate, while the Pauli-Z gate and the phase-shift gate are executed by applying electric field. A two-qubit phase shift gate is materialized with the use of an electrostatic potential. They constitute a set of universal quantum gates. An examination of material parameters leads to a feasibility of a NEMS(Nano-Electro-Mechanical System)-based quantum computer.

9 pages, 8 figures

References in corpus (9)

• Strong dispersive coupling of a high finesse cavity to a micromechanical membrane
• Dynamical Backaction of Microwave Fields on a Nanomechanical Oscillator
• Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization
• Quantum Information Processing with Nanomechanical Qubits
• Universal quantum computation based on nanoscale skyrmion helicity qubits in frustrated magnets
• Intrinsic noise properties of atomic point contact displacement detectors
• Feedback cooling of the normal modes of a massive electromechanical system to submillikelvin temperature
• Dissipation in circuit quantum electrodynamics: lasing and cooling of a low-frequency oscillator
• Qubits based on merons in magnetic nanodisks

Cited by in corpus (1)

• Universal quantum computing based on magnetic domain wall qubits