A Quantum-Logic Gate between Distant Quantum-Network Modules
- URL: http://arxiv.org/abs/2103.13095v1
- Date: Wed, 24 Mar 2021 11:13:44 GMT
- Title: A Quantum-Logic Gate between Distant Quantum-Network Modules
- Authors: Severin Daiss, Stefan Langenfeld, Stephan Welte, Emanuele Distante,
Philip Thomas, Lukas Hartung, Olivier Morin, and Gerhard Rempe
- Abstract summary: Quantum networks promise a solution by integrating smaller qubit modules to a larger computing cluster.
Here we experimentally realize such a gate over a distance of 60m.
Our non-local quantum-logic gate could be extended both to multiple qubits and many modules for a tailor-made multi-qubit computing register.
- Score: 2.810625954925815
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The big challenge in quantum computing is to realize scalable multi-qubit
systems with cross-talk free addressability and efficient coupling of
arbitrarily selected qubits. Quantum networks promise a solution by integrating
smaller qubit modules to a larger computing cluster. Such a distributed
architecture, however, requires the capability to execute quantum-logic gates
between distant qubits. Here we experimentally realize such a gate over a
distance of 60m. We employ an ancillary photon that we successively reflect
from two remote qubit modules, followed by a heralding photon detection which
triggers a final qubit rotation. We use the gate for remote entanglement
creation of all four Bell states. Our non-local quantum-logic gate could be
extended both to multiple qubits and many modules for a tailor-made multi-qubit
computing register.
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