In this paper,we propose a scheme for implementing the nonadiabatic holonomic quantum computation(NHQC+)of two Rydberg atoms by using invariant-based reverse engineering(IBRE).The scheme is based on Förster reson...In this paper,we propose a scheme for implementing the nonadiabatic holonomic quantum computation(NHQC+)of two Rydberg atoms by using invariant-based reverse engineering(IBRE).The scheme is based on Förster resonance induced by strong dipole-dipole interaction between two Rydberg atoms,which provides a selective coupling mechanism to simply the dynamics of system.Moreover,for improving the fidelity of the scheme,the optimal control method is introduced to enhance the gate robustness against systematic errors.Numerical simulations show the scheme is robust against the random noise in control fields,the deviation of dipole-dipole interaction,the Förster defect,and the spontaneous emission of atoms.Therefore,the scheme may provide some useful perspectives for the realization of quantum computation with Rydberg atoms.展开更多
Holonomic quantum computation is a quantum computation strategy that promises some built-in noise-resilience features. Here,we propose a scheme for nonadiabatic holonomic quantum computation with nitrogen-vacancy cent...Holonomic quantum computation is a quantum computation strategy that promises some built-in noise-resilience features. Here,we propose a scheme for nonadiabatic holonomic quantum computation with nitrogen-vacancy center electron spins, which are characterized by fast quantum gates and long qubit coherence times. By varying the detuning, amplitudes, and phase difference of lasers applied to a nitrogen-vacancy center, one can directly realize an arbitrary single-qubit holonomic gate on the spin.Meanwhile, with the help of cavity-assisted interactions, a nontrivial two-qubit holonomic quantum gate can also be induced. The distinct merit of this scheme is that all the quantum gates are obtained via an all-optical geometric manipulation of the solid-state spins. Therefore, our scheme opens the possibility for robust quantum computation using solid-state spins in an all-optical way.展开更多
Because of quantum superposition,quantum computation can solve many problems,such as factoring large integers[1]and searching unsorted databases[2,3],much faster than classical computation.To realize practical quantum...Because of quantum superposition,quantum computation can solve many problems,such as factoring large integers[1]and searching unsorted databases[2,3],much faster than classical computation.To realize practical quantum computation and then gain the desired advantages,a universal set of quantum gates with sufficiently high fidelities are needed.However,various inevitable errors reduce the gate fidelities and finally collapse the computation results,which makes the realizations of quantum computation very challenging.To展开更多
基金supported by the National Natural Science Foundation of China under Grant Nos 11575045,11874114,and 11674060the Natural Science Funds for Distinguished Young Scholar of Fujian Province under Grant 2020J06011Project from Fuzhou University under Grant JG202001-2.
文摘In this paper,we propose a scheme for implementing the nonadiabatic holonomic quantum computation(NHQC+)of two Rydberg atoms by using invariant-based reverse engineering(IBRE).The scheme is based on Förster resonance induced by strong dipole-dipole interaction between two Rydberg atoms,which provides a selective coupling mechanism to simply the dynamics of system.Moreover,for improving the fidelity of the scheme,the optimal control method is introduced to enhance the gate robustness against systematic errors.Numerical simulations show the scheme is robust against the random noise in control fields,the deviation of dipole-dipole interaction,the Förster defect,and the spontaneous emission of atoms.Therefore,the scheme may provide some useful perspectives for the realization of quantum computation with Rydberg atoms.
基金supported by the National Basic Research Program of China (Grant No. 2013CB921804)the National Key Research and Development Program of China (Grant No. 2016YFA0301803)the Education Department of Anhui Province (Grant No. KJ2015A299)
文摘Holonomic quantum computation is a quantum computation strategy that promises some built-in noise-resilience features. Here,we propose a scheme for nonadiabatic holonomic quantum computation with nitrogen-vacancy center electron spins, which are characterized by fast quantum gates and long qubit coherence times. By varying the detuning, amplitudes, and phase difference of lasers applied to a nitrogen-vacancy center, one can directly realize an arbitrary single-qubit holonomic gate on the spin.Meanwhile, with the help of cavity-assisted interactions, a nontrivial two-qubit holonomic quantum gate can also be induced. The distinct merit of this scheme is that all the quantum gates are obtained via an all-optical geometric manipulation of the solid-state spins. Therefore, our scheme opens the possibility for robust quantum computation using solid-state spins in an all-optical way.
文摘Because of quantum superposition,quantum computation can solve many problems,such as factoring large integers[1]and searching unsorted databases[2,3],much faster than classical computation.To realize practical quantum computation and then gain the desired advantages,a universal set of quantum gates with sufficiently high fidelities are needed.However,various inevitable errors reduce the gate fidelities and finally collapse the computation results,which makes the realizations of quantum computation very challenging.To
