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

• URL: http://arxiv.org/abs/2103.07263v3
• Date: Sun, 10 Dec 2023 10:40:24 GMT
• Title: The long mean-life-time-controlled and potentially scalable qubits composed of electric dipolar molecules based on graphene
• Authors: Yong-Yi Huang
• Abstract summary: 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. We can perform quantum computations by manipulating the qubits of electric dipolar molecules just like those of neutral atoms.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

Related papers

• Long-lived entanglement of molecules in magic-wavelength optical tweezers [41.94295877935867]
  We present the first realisation of a microwave-driven entangling gate between two molecules. We show that the magic-wavelength trap preserves the entanglement, with no measurable decay over 0.5 s. The extension of precise quantum control to complex molecular systems will allow their additional degrees of freedom to be exploited across many domains of quantum science.
  arXiv  Detail & Related papers  (2024-08-27T09:28:56Z)
• Foldy-Wouthuysen transformation and multiwave states of a graphene electron in external fields and free (2+1)-space [91.3755431537592]
  Graphene electrons in a static electric field can exist in the multiwave Hermite-Gauss states defining non-spreading coherent beams. It is proven that the Hermite-Gauss beams exist even in the free space.
  arXiv  Detail & Related papers  (2023-05-07T17:03:00Z)
• Bound state of distant photons in waveguide quantum electrodynamics [137.6408511310322]
  Quantum correlations between distant particles remain enigmatic since the birth of quantum mechanics. We predict a novel kind of bound quantum state in the simplest one-dimensional setup of two interacting particles in a box. Such states could be realized in the waveguide quantum electrodynamics platform.
  arXiv  Detail & Related papers  (2023-03-17T09:27:02Z)
• Shuttling an electron spin through a silicon quantum dot array [0.0]
  Coherent links between qubits separated by tens of micrometers are expected to facilitate scalable quantum computing architectures. Here, we use a linear array of four tunnel-coupled quantum dots in a 28Si/SiGe heterostructure to create a short quantum link. We estimate the spin-flip probability per hop in these experiments and conclude that this is well below 0.01% per hop.
  arXiv  Detail & Related papers  (2022-09-02T09:55:38Z)
• Experimental limit on non-linear state-dependent terms in quantum theory [110.83289076967895]
  We implement blinded measurement and data analysis with three control bit strings. Control of systematic effects is realized by producing one of the control bit strings with a classical random-bit generator. Our measurements find no evidence for electromagnetic quantum state-dependent non-linearity.
  arXiv  Detail & Related papers  (2022-04-25T18:00:03Z)
• Quantum computation in a hybrid array of molecules and Rydberg atoms [7.425093155951875]
  We show that an array of polar molecules interacting with Rydberg atoms is a promising hybrid system for scalable quantum computation. Quantum information is stored in long-lived hyperfine or rotational states of molecules. A two-qubit gate based on this interaction has a duration of 1 $mu$s and an achievable fidelity of 99.9%.
  arXiv  Detail & Related papers  (2022-04-08T20:10:36Z)
• An electrically-driven single-atom `flip-flop' qubit [43.55994393060723]
  Quantum information is encoded in the electron-nuclear states of a phosphorus donor. Results pave the way to the construction of solid-state quantum processors.
  arXiv  Detail & Related papers  (2022-02-09T13:05:12Z)
• On-demand electrical control of spin qubits [0.49813399226871663]
  We demonstrate a technique that enables a emphswitchable interaction between spins and orbital motion of electrons in silicon quantum dots. The naturally weak effects of the relativistic spin-orbit interaction in silicon are enhanced by more than three orders of magnitude by controlling the energy quantisation of electrons in the nanostructure.
  arXiv  Detail & Related papers  (2022-01-18T00:43:54Z)
• Quantum control of nuclear spin qubits in a rapidly rotating diamond [62.997667081978825]
  Nuclear spins in certain solids couple weakly to their environment, making them attractive candidates for quantum information processing and inertial sensing. We demonstrate optical nuclear spin polarization and rapid quantum control of nuclear spins in a diamond physically rotating at $1,$kHz, faster than the nuclear spin coherence time. Our work liberates a previously inaccessible degree of freedom of the NV nuclear spin, unlocking new approaches to quantum control and rotation sensing.
  arXiv  Detail & Related papers  (2021-07-27T03:39:36Z)
• Quantum coherent spin-electric control in a molecular nanomagnet at clock transitions [57.50861918173065]
  Electrical control of spins at the nanoscale offers architectural advantages in spintronics. Recent demonstrations of electric-field (E-field) sensitivities in molecular spin materials are tantalising. E-field sensitivities reported so far are rather weak, prompting the question of how to design molecules with stronger spin-electric couplings.
  arXiv  Detail & Related papers  (2020-05-03T09:27:31Z)
• Spin current generation and control in carbon nanotubes by combining rotation and magnetic field [78.72753218464803]
  We study the quantum dynamics of ballistic electrons in rotating carbon nanotubes in the presence of a uniform magnetic field. By suitably combining the applied magnetic field intensity and rotation speed, one can tune one of the currents to zero while keeping the other one finite, giving rise to a spin current generator.
  arXiv  Detail & Related papers  (2020-01-20T08:54:56Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.