Quantum transduction via generalized continuous-variable teleportation

• URL: http://arxiv.org/abs/2506.06899v1
• Date: Sat, 07 Jun 2025 19:16:02 GMT
• Title: Quantum transduction via generalized continuous-variable teleportation
• Authors: Quntao Zhuang,
• Abstract summary: Quantum teleportation transfers quantum states between different systems.<n>In terms of bosonic modes, quantum teleportation relies on two-mode squeezing for entanglement and a balanced beamsplitter.<n>We propose to enable transduction with teleportation, while only relying on a conventional transduction device and narrow-band entanglement.
• Score: 0.5439020425818999
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum transduction converts quantum states between different frequencies. Similarly, quantum teleportation transfers quantum states between different systems. While often appreciated for quantum communication between distant locations, teleportation can also operate between different frequencies. In terms of bosonic modes, quantum teleportation relies on two-mode squeezing -- squeezed on the balanced Einstein-Podolsky-Rosen (EPR) quadratures -- for entanglement and a balanced beamsplitter plus homodyne detection for Bell measurement. Since cross-frequency band entanglement is challenging to generate, we propose to enable transduction with teleportation, while only relying on a conventional transduction device and narrow-band entanglement. Our insight is that a transduction device performs a cross-frequency-band beamsplitter, almost what is needed in a Bell measurement, except that it is often not balanced. We resolve the issue by proposing a generalized teleportation protocol with arbitrarily unbalanced EPR quadratures and matched unbalanced beamsplitters. The protocol can enhance quantum transduction, using only off-the-shelf components -- intraband beamsplitters, offline squeezing, homodyne detection and displacements. The proposed protocol achieves perfect transduction when applying to a transduction device with an arbitrarily low efficiency, at infinite squeezing. A minimum squeezing in the range of [1.195,4.343] decibels is needed to achieve quantum capacity enhancement.

Related papers

• Path superposition as resource for perfect quantum teleportation with separable states [0.8192907805418583]
  We show that it is possible to relax the entanglement requirement in quantum teleportation if we have access to a certain strain of superposition of quantum processes.<n>We find that when superposition of paths is incorporated in the protocol, perfect quantum teleportation becomes possible with nonzero probability.
  arXiv  Detail & Related papers  (2025-05-16T16:03:38Z)
• Quantum state transfer between superconducting cavities via exchange-free interactions [20.561557006177914]
  We propose and experimentally demonstrate a novel protocol for transferring quantum states between superconducting cavities. This approach resembles quantum teleportation, where quantum information is transferred between different nodes without directly transmitting carrier photons. We experimentally realize coherent and bidirectional transfer of arbitrary quantum states, including bosonic quantum error correction codes.
  arXiv  Detail & Related papers  (2024-08-26T07:57:39Z)
• Realizing fracton order from long-range quantum entanglement in programmable Rydberg atom arrays [45.19832622389592]
  Storing quantum information requires battling quantum decoherence, which results in a loss of information over time. To achieve error-resistant quantum memory, one would like to store the information in a quantum superposition of degenerate states engineered in such a way that local sources of noise cannot change one state into another. We show that this platform also allows to detect and correct certain types of errors en route to the goal of true error-resistant quantum memory.
  arXiv  Detail & Related papers  (2024-07-08T12:46:08Z)
• Quantum teleportation between a continuous-variable optical qumode and a discrete-variable solid-state qubit [12.102621653528027]
  We propose a scheme to teleport a continuous variable optical qubit, encoded in an optical qumode, onto a discrete variable solid-state qubit, associated with a single nitrogen-vacancy center spin in diamond, via a hybrid entanglement. We find that the average teleportation fidelity can still exceed the classical limit, enabling substantial teleportation distances under realistic experimental conditions.
  arXiv  Detail & Related papers  (2024-06-27T09:20:09Z)
• Robust teleportation of a surface code and cascade of topological quantum phase transitions [12.446931518819875]
  We investigate a protocol for teleporting a long-range entangled surface code state using elementary Bell measurements. We find infinitesimally weak entanglement is sufficient in teleporting a self-dual topological surface code. Our protocol, which can be readily implemented in dynamically Rydberg atom arrays, gives guidance for a practical demonstration of the power of quantum measurements.
  arXiv  Detail & Related papers  (2024-03-07T18:59:56Z)
• Enhanced quantum state transfer: Circumventing quantum chaotic behavior [35.74056021340496]
  We show how to transfer few-particle quantum states in a two-dimensional quantum network. Our approach paves the way to short-distance quantum communication for connecting distributed quantum processors or registers.
  arXiv  Detail & Related papers  (2024-02-01T19:00:03Z)
• 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)
• Quantum process tomography of continuous-variable gates using coherent states [49.299443295581064]
  We demonstrate the use of coherent-state quantum process tomography (csQPT) for a bosonic-mode superconducting circuit. We show results for this method by characterizing a logical quantum gate constructed using displacement and SNAP operations on an encoded qubit.
  arXiv  Detail & Related papers  (2023-03-02T18:08:08Z)
• Quantum emulation of the transient dynamics in the multistate Landau-Zener model [50.591267188664666]
  We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity. Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
  arXiv  Detail & Related papers  (2022-11-26T15:04:11Z)
• Overcoming noise in quantum teleportation with multipartite hybrid entanglement [0.0]
  We propose an efficient quantum teleportation protocol in the presence of pure decoherence. We demonstrate our protocol in an all-optical experiment.
  arXiv  Detail & Related papers  (2022-10-26T18:00:03Z)
• Interactive Protocols for Classically-Verifiable Quantum Advantage [46.093185827838035]
  "Interactions" between a prover and a verifier can bridge the gap between verifiability and implementation. We demonstrate the first implementation of an interactive quantum advantage protocol, using an ion trap quantum computer.
  arXiv  Detail & Related papers  (2021-12-09T19:00:00Z)
• The Role of Localizable Concurrence in Quantum Teleportation Protocols [0.0]
  For mixed multi-partite states the lack of computable entanglement measures has made the identification of the quantum resource responsible for this advantage more challenging. We show that any teleportation protocol using an arbitrary multi-partite state, that includes a Bell measurement, requires a non-vanishing localizable concurrence between two of its parties in order to perform better than the classical protocol.
  arXiv  Detail & Related papers  (2021-06-12T01:00:52Z)
• Direct Quantum Communications in the Presence of Realistic Noisy Entanglement [69.25543534545538]
  We propose a novel quantum communication scheme relying on realistic noisy pre-shared entanglement. Our performance analysis shows that the proposed scheme offers competitive QBER, yield, and goodput.
  arXiv  Detail & Related papers  (2020-12-22T13:06:12Z)
• Teleporting quantum information encoded in fermionic modes [62.997667081978825]
  We consider teleportation of quantum information encoded in modes of a fermionic field. In particular, one is forced to distinguish between single-mode entanglement swapping, and qubit teleportation with or without authentication.
  arXiv  Detail & Related papers  (2020-02-19T14:15:16Z)

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.