A quantum-bit encoding converter
- URL: http://arxiv.org/abs/2211.10457v1
- Date: Fri, 18 Nov 2022 19:00:08 GMT
- Title: A quantum-bit encoding converter
- Authors: T. Darras, B.E. Asenbeck, G. Guccione, A. Cavaill\`es, H. Le Jeannic,
J. Laurat
- Abstract summary: We certify the protocol on a complete set of single-photon qubits, successfully converting them to cat-state qubits with fidelities exceeding the classical limit.
Our result demonstrates an essential tool for enabling interconnected quantum devices and architectures with enhanced versatility and scalability.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: From telecommunication to computing architectures, the realm of classical
information hinges on converter technology to enable the exchange of data
between digital and analog formats, a process now routinely performed across a
variety of electronic devices. A similar exigency exists as well in quantum
information technology where different frameworks are being developed for
quantum computing, communication, and sensing. Thus, efficient quantum
interconnects are a major need to bring these parallel approaches together and
scale up quantum information systems. So far, however, the conversion between
different optical quantum-bit encodings has remained challenging due to the
difficulty of preserving fragile quantum superpositions and the demanding
requirements for postselection-free implementations. Here we demonstrate such a
conversion of quantum information between the two main paradigms, namely
discrete- and continuous-variable qubits. We certify the protocol on a complete
set of single-photon qubits, successfully converting them to cat-state qubits
with fidelities exceeding the classical limit. Our result demonstrates an
essential tool for enabling interconnected quantum devices and architectures
with enhanced versatility and scalability.
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