Deterministic quantum teleportation between distant superconducting
chips
- URL: http://arxiv.org/abs/2302.08756v1
- Date: Fri, 17 Feb 2023 08:41:29 GMT
- Title: Deterministic quantum teleportation between distant superconducting
chips
- Authors: Jiawei Qiu, Yang Liu, Jingjing Niu, Ling Hu, Yukai Wu, Libo Zhang,
Wenhui Huang, Yuanzhen Chen, Jian Li, Song Liu, Youpeng Zhong, Luming Duan,
Dapeng Yu
- Abstract summary: 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.
- Score: 15.66155277002441
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum teleportation~\cite{Bennett1993} is of both fundamental interest and
great practical importance in quantum information science. To date, quantum
teleportation has been implemented in various physical
systems~\cite{Pirandola2015}, among which superconducting qubits are of
particular practical significance as they emerge as a leading system to realize
large-scale quantum computation~\cite{Arute2019,Wu2021}. Nevertheless, the
number of superconducting qubits on the same chip is severely limited by the
available chip size, the cooling power, and the wiring complexity. Realization
of quantum teleportation and remote computation over qubits on distant
superconducting chips is a key quantum communication technology to scaling up
the system through a distributed quantum computational
network~\cite{Gottesman1999,Eisert2000,Jiang2007,Kimble2008,Monroe2014}.
However, this goal has not been realized yet in experiments due to the
technical challenge of making a quantum interconnect between distant
superconducting chips and the inefficient transfer of flying microwave photons
over the lossy
interconnects~\cite{Kurpiers2018,Axline2018,Campagne2018,Magnard2020}. Here we
demonstrate deterministic teleportation of quantum states and entangling gates
between distant superconducting chips connected by a 64-meter-long cable bus
featuring an ultralow loss of 0.32~dB/km at cryogenic temperatures, where high
fidelity remote entanglement is generated via flying microwave photons
utilizing time-reversal-symmetry~\cite{Cirac1997,Korotkov2011}. Apart from the
fundamental interest of teleporting macroscopic superconducting qubits over a
long distance, our work lays a foundation to realization of large-scale
superconducting quantum computation through a distributed computational
network~\cite{Gottesman1999,Eisert2000,Jiang2007,Kimble2008,Monroe2014}.
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