Squeezing and quantum state engineering with Josephson travelling wave amplifiers
Quantum information: Microwave quantum computer Microwaves, familiar from our everyday lives, can be used to perform quantum computation. We show how this is possible using a quantum electronic device called a Josephson Travelling Wave Parametric Amplifier, or TWPA for short. This device has already...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2017-06-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-017-0020-8 |
| _version_ | 1818749288451145728 |
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| author | Arne L. Grimsmo Alexandre Blais |
| author_facet | Arne L. Grimsmo Alexandre Blais |
| author_sort | Arne L. Grimsmo |
| collection | DOAJ |
| description | Quantum information: Microwave quantum computer Microwaves, familiar from our everyday lives, can be used to perform quantum computation. We show how this is possible using a quantum electronic device called a Josephson Travelling Wave Parametric Amplifier, or TWPA for short. This device has already been made and extensively tested in the lab for the purpose of amplifying extremely weak signals. We here demonstrate that the TWPA is much more than just an amplifier: It is a remarkably powerful resource for generating just the type of entanglement that is needed for a quantum computer. Surprisingly, a full-fledged universal quantum computer can be made using just four such devices, if their output radiation is combined to interfere in just the right way. This proposal may lead to small-scale quantum computers using already existing technology. |
| first_indexed | 2024-12-18T04:01:24Z |
| format | Article |
| id | doaj.art-1ad0468584ee457b9cbfb0198b53ef7c |
| institution | Directory Open Access Journal |
| issn | 2056-6387 |
| language | English |
| last_indexed | 2024-12-18T04:01:24Z |
| publishDate | 2017-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj.art-1ad0468584ee457b9cbfb0198b53ef7c2022-12-21T21:21:40ZengNature Portfolionpj Quantum Information2056-63872017-06-013111110.1038/s41534-017-0020-8Squeezing and quantum state engineering with Josephson travelling wave amplifiersArne L. Grimsmo0Alexandre Blais1Institut quantique and Départment de Physique, Université de SherbrookeInstitut quantique and Départment de Physique, Université de SherbrookeQuantum information: Microwave quantum computer Microwaves, familiar from our everyday lives, can be used to perform quantum computation. We show how this is possible using a quantum electronic device called a Josephson Travelling Wave Parametric Amplifier, or TWPA for short. This device has already been made and extensively tested in the lab for the purpose of amplifying extremely weak signals. We here demonstrate that the TWPA is much more than just an amplifier: It is a remarkably powerful resource for generating just the type of entanglement that is needed for a quantum computer. Surprisingly, a full-fledged universal quantum computer can be made using just four such devices, if their output radiation is combined to interfere in just the right way. This proposal may lead to small-scale quantum computers using already existing technology.https://doi.org/10.1038/s41534-017-0020-8 |
| spellingShingle | Arne L. Grimsmo Alexandre Blais Squeezing and quantum state engineering with Josephson travelling wave amplifiers npj Quantum Information |
| title | Squeezing and quantum state engineering with Josephson travelling wave amplifiers |
| title_full | Squeezing and quantum state engineering with Josephson travelling wave amplifiers |
| title_fullStr | Squeezing and quantum state engineering with Josephson travelling wave amplifiers |
| title_full_unstemmed | Squeezing and quantum state engineering with Josephson travelling wave amplifiers |
| title_short | Squeezing and quantum state engineering with Josephson travelling wave amplifiers |
| title_sort | squeezing and quantum state engineering with josephson travelling wave amplifiers |
| url | https://doi.org/10.1038/s41534-017-0020-8 |
| work_keys_str_mv | AT arnelgrimsmo squeezingandquantumstateengineeringwithjosephsontravellingwaveamplifiers AT alexandreblais squeezingandquantumstateengineeringwithjosephsontravellingwaveamplifiers |