Strong coupling of a superconducting flux qubit to single bismuth donors

• URL: http://arxiv.org/abs/2411.02852v1
• Date: Tue, 05 Nov 2024 06:54:09 GMT
• Title: Strong coupling of a superconducting flux qubit to single bismuth donors
• Authors: T. Chang, I. Holzman, S. Q. Lim, D. Holmes, B. C. Johnson, D. N. Jamieson, M. Stern,
• Abstract summary: Single bismuth donors can coherently transfer their quantum information to a superconducting flux qubit. This superconducting device allows to connect distant spins on-demand with little impact on their coherent behavior.
• Score: 0.0
• License:
• Abstract: The realization of a quantum computer represents a tremendous scientific and technological challenge due to the extreme fragility of quantum information. The physical support of information, namely the quantum bit or qubit, must at the same time be strongly coupled to other qubits by gates to compute information, and well decoupled from its environment to keep its quantum behavior. An interesting physical system for realizing such qubits are magnetic impurities in semiconductors, such as bismuth donors in silicon. Indeed, spins associated to bismuth donors can reach an extremely long coherence time -- of the order of seconds. Yet it is extremely difficult to establish and control efficient gates between these spins. Here we demonstrate a protocol where single bismuth donors can coherently transfer their quantum information to a superconducting flux qubit, which acts as a mediator or quantum bus. This superconducting device allows to connect distant spins on-demand with little impact on their coherent behavior.

Related papers

• Nanomechanical manipulation of superconducting charge-qubit quantum networks [0.0]
  manipulation of quantum network is achieved by transduction of quantum information between charge-qubits and intentionally built nanomechanical coherent states. This performance is achieved using quantum entanglement between electrical and mechanical states.
  arXiv  Detail & Related papers  (2023-10-05T08:17:27Z)
• High-fidelity two-qubit gates of hybrid superconducting-semiconducting singlet-triplet qubits [0.0]
  Superconductors induce long-range interactions between the spin degrees of freedom of quantum dots. We show that this anisotropy is tunable and enables fast and high-fidelity two-qubit gates between singlet-triplet (ST) spin qubits. Our design is immune to leakage of the quantum information into noncomputational states.
  arXiv  Detail & Related papers  (2023-04-11T09:30:38Z)
• 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)
• Measurement-induced entanglement and teleportation on a noisy quantum processor [105.44548669906976]
  We investigate measurement-induced quantum information phases on up to 70 superconducting qubits. We use a duality mapping, to avoid mid-circuit measurement and access different manifestations of the underlying phases. Our work demonstrates an approach to realize measurement-induced physics at scales that are at the limits of current NISQ processors.
  arXiv  Detail & Related papers  (2023-03-08T18:41:53Z)
• Deterministic quantum teleportation between distant superconducting chips [15.66155277002441]
  We demonstrate deterministic teleportation of quantum states and entangling gates between distant superconducting chips connected by a 64-meter-long cable bus. High fidelity remote entanglement is generated via flying microwave photons utilizing time-reversal-symmetry. Our work lays a foundation to realization of large-scale superconducting quantum computation through a distributed computational network.
  arXiv  Detail & Related papers  (2023-02-17T08:41:29Z)
• Simulation of interaction-induced chiral topological dynamics on a digital quantum computer [3.205614282399206]
  Chiral edge states are sought-after as paradigmatic topological states relevant to quantum information processing and electron transport. We demonstrate chiral topological propagation that is induced by suitably designed interactions, instead of flux or spin-orbit coupling. By taking advantage of the quantum nature of the platform, we circumvented difficulties from the limited qubit number and gate fidelity in present-day noisy intermediate-scale quantum (NISQ)-era quantum computers.
  arXiv  Detail & Related papers  (2022-07-28T18:00:29Z)
• Chiral Quantum Network with Giant Atoms [7.33811357166334]
  In superconducting quantum circuits (SQCs), chiral routing quantum information is often realized with the ferrite circulators. We propose a novel method to realize chiral quantum networks by exploiting giant atom effects in SQC platforms.
  arXiv  Detail & Related papers  (2021-06-24T17:08:49Z)
• Simulation of Collective Neutrino Oscillations on a Quantum Computer [117.44028458220427]
  We present the first simulation of a small system of interacting neutrinos using current generation quantum devices. We introduce a strategy to overcome limitations in the natural connectivity of the qubits and use it to track the evolution of entanglement in real-time.
  arXiv  Detail & Related papers  (2021-02-24T20:51:25Z)
• Information Scrambling in Computationally Complex Quantum Circuits [56.22772134614514]
  We experimentally investigate the dynamics of quantum scrambling on a 53-qubit quantum processor. We show that while operator spreading is captured by an efficient classical model, operator entanglement requires exponentially scaled computational resources to simulate.
  arXiv  Detail & Related papers  (2021-01-21T22:18:49Z)
• Waveguide Bandgap Engineering with an Array of Superconducting Qubits [101.18253437732933]
  We experimentally study a metamaterial made of eight superconducting transmon qubits with local frequency control. We observe the formation of super- and subradiant states, as well as the emergence of a polaritonic bandgap. The circuit of this work extends experiments with one and two qubits towards a full-blown quantum metamaterial.
  arXiv  Detail & Related papers  (2020-06-05T09:27:53Z)
• Circuit Quantum Electrodynamics [62.997667081978825]
  Quantum mechanical effects at the macroscopic level were first explored in Josephson junction-based superconducting circuits in the 1980s. In the last twenty years, the emergence of quantum information science has intensified research toward using these circuits as qubits in quantum information processors. The field of circuit quantum electrodynamics (QED) has now become an independent and thriving field of research in its own right.
  arXiv  Detail & Related papers  (2020-05-26T12:47:38Z)

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.