The long mean-life-time-controlled and potentially scalable qubits composed of electric dipolar molecules based on graphene

Abstract

We propose a new kind of qubits composed of electric dipolar molecules. The electric dipolar molecules in an external uniform electric field will take simple harmonic oscillations, whose quantum states belonging to the two lowest energy levels act as the states |0>, |1> of a qubit. The qubits' excited states have a very long controlled mean life time about 260 seconds, decoherence is no longer an obstacle in quantum computation. We can perform quantum computations by manipulating the qubits of electric dipolar molecules just like those of neutral atoms. When the qubits are used for quantum computations, the dipolar moments' orientations will harmonically oscillate along an external electric field and they will not change the directions: along or against the electric field, so the qubits can be large-scalely manufactured in graphene system. The radius of Rydberg blockade is about 100nm. The number of operated qubits reach several millions.

arXiv comment6 pages, 3 figures, some important parameters are re-evaluated in the present version

References in corpus (14)

• Quantum information with Rydberg atoms
• The Physical Implementation of Quantum Computation
• Quantum computation with trapped polar molecules
• Consequences of Zeeman Degeneracy for van der Waals Blockade between Rydberg Atoms
• Experimental investigations of the dipolar interactions between single Rydberg atoms
• Dipolar Exchange Quantum Logic Gate with Polar Molecules
• Semiconductor Quantum Computation
• Spin Readout Techniques of the Nitrogen-Vacancy Center in Diamond
• Deutsch, Toffoli, and CNOT Gates via Rydberg Blockade of Neutral Atoms
• Versatile laser-free trapped-ion entangling gates
• Relaxation times in an open interacting two-qubit system
• A scalable Controlled NOT gate for linear optical computing using microring resonators
• Control of a spin qubit in a lateral GaAs quantum dot based on symmetry of gating potential
• Significance of an external magnetic field on two-phonon processes in gated lateral semiconductor quantum dots