Experimental Demonstration of Efficient High-dimensional Quantum Gates with Orbital Angular Momentum

• URL: http://arxiv.org/abs/2010.05268v2
• Date: Mon, 22 Nov 2021 11:09:43 GMT
• Title: Experimental Demonstration of Efficient High-dimensional Quantum Gates with Orbital Angular Momentum
• Authors: Yunlong Wang, Shihao Ru, Feiran Wang, Pei Zhang and Fuli Li
• Abstract summary: We experimentally demonstrate the four-dimensional X gate and its unique higher orders with the average conversion efficiency 93%. Our work is an important step towards the goal of achieving arbitrary high-dimensional quantum circuit and paves a way for the implementation of high-dimensional quantum communication and computation.
• Score: 4.685726479038803
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum gates are essential for the realization of quantum computer and have been implemented in various types of two-level systems. However, high-dimensional quantum gates are rarely investigated both theoretically and experimentally even that high-dimensional quantum systems exhibit remarkable advantages over two-level systems for some quantum information and quantum computing tasks. Here we experimentally demonstrate the four-dimensional X gate and its unique higher orders with the average conversion efficiency 93\%. All these gates are based on orbital-angular-momentum degree of freedom of single photons. Besides, a set of controlled quantum gates is implemented by use of polarization degree of freedom. Our work is an important step towards the goal of achieving arbitrary high-dimensional quantum circuit and paves a way for the implementation of high-dimensional quantum communication and computation.

Related papers

• High-Dimensional Two-Photon Quantum Controlled Phase-Flip Gate [1.0660502023086995]
  We propose to the best of our knowledge the first high-dimensional, deterministic and universal two-photon quantum gate. By using an optical cavity embedded with a single trapped 40Ca+ ion, we achieve a high average fidelity larger than 98%. Our proposed system can be an essential building block for high-dimensional quantum information processing, and also provides a platform for studying high-dimensional cavity QED.
  arXiv  Detail & Related papers  (2024-04-23T01:58:43Z)
• Experimental realization of universal quantum gates and six-qubit state using photonic quantum walk [2.331828779757202]
  We report the experimental realize of universal set of quantum gates using photonic quantum walk. We encode multiple qubits using polarization and paths degree of freedom for photon and demonstrate realization of universal set of gates with 100% success probability. This work marks a significant progress towards using photonic quantum walk for quantum computing.
  arXiv  Detail & Related papers  (2024-03-11T12:32:22Z)
• A vertical gate-defined double quantum dot in a strained germanium double quantum well [48.7576911714538]
  Gate-defined quantum dots in silicon-germanium heterostructures have become a compelling platform for quantum computation and simulation. We demonstrate the operation of a gate-defined vertical double quantum dot in a strained germanium double quantum well. We discuss challenges and opportunities and outline potential applications in quantum computing and quantum simulation.
  arXiv  Detail & Related papers  (2023-05-23T13:42:36Z)
• Efficient criteria of quantumness for a large system of qubits [58.720142291102135]
  We discuss the dimensionless combinations of basic parameters of large, partially quantum coherent systems. Based on analytical and numerical calculations, we suggest one such number for a system of qubits undergoing adiabatic evolution.
  arXiv  Detail & Related papers  (2021-08-30T23:50:05Z)
• Imaginary Time Propagation on a Quantum Chip [50.591267188664666]
  Evolution in imaginary time is a prominent technique for finding the ground state of quantum many-body systems. We propose an algorithm to implement imaginary time propagation on a quantum computer.
  arXiv  Detail & Related papers  (2021-02-24T12:48:00Z)
• Experimental Realization of Nonadiabatic Holonomic Single-Qubit Quantum Gates with Two Dark Paths in a Trapped Ion [41.36300605844117]
  We show nonadiabatic holonomic single-qubit quantum gates on two dark paths in a trapped $171mathrmYb+$ ion based on four-level systems with resonant drives. We find that nontrivial holonomic two-qubit quantum gates can also be realized within current experimental technologies.
  arXiv  Detail & Related papers  (2021-01-19T06:57:50Z)
• Experimental Demonstration of a Quantum Controlled-SWAP Gate with Multiple Degrees of Freedom of a Single Photon [4.121840022679671]
  We propose and experimentally implement quantum Fredkin gate in a single-photon hybrid-degrees-of-freedom system. We find that a kind of Greenberger-Horne-Zeilinger-like states can be prepared by using our quantum Fredkin gate.
  arXiv  Detail & Related papers  (2020-11-04T23:39:20Z)
• High-efficiency arbitrary quantum operation on a high-dimensional quantum system [7.921557303547302]
  The ultimate goal of quantum control is to realize arbitrary quantum operations (AQuOs) for all possible open quantum system dynamics. Here, we experimentally demonstrate a universal approach of AQuO on a photonic qudit with minimum physical resource of a two-level ancilla and a $log_2d$-scale circuit depth. The AQuO is then applied in quantum trajectory simulation for quantum subspace stabilization and quantum Zeno dynamics, as well as incoherent manipulation and generalized measurements of the qudit.
  arXiv  Detail & Related papers  (2020-10-22T04:01:03Z)
• Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit-qudit dynamics [50.591267188664666]
  Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
  arXiv  Detail & Related papers  (2020-10-14T14:33:34Z)
• Experimental Quantum Generative Adversarial Networks for Image Generation [93.06926114985761]
  We experimentally achieve the learning and generation of real-world hand-written digit images on a superconducting quantum processor. Our work provides guidance for developing advanced quantum generative models on near-term quantum devices.
  arXiv  Detail & Related papers  (2020-10-13T06:57:17Z)

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.