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Metamaterial absorber for dual-rail photonic qubit filtering

Metamaterial absorber for dual-rail photonic qubit filtering
Metamaterial absorber for dual-rail photonic qubit filtering
We demonstrate manipulation of a photonic qubit, encoded in a dual-rail basis, by a plasmonic metamaterial absorber. The metamaterial is designed in a way to transmit a single photon, occupying anti-symmetric superposition of two spatial modes, without losses and to absorb its symmetric superposition completely. Thus, whatever the input state of the dual-rail photon, it can leave the absorber in anti-symmetric state only. Probability to pass through the absorber is defined by the amplitude of the anti-symmetric part in the input photon state. To verify this phenomenon, we assembled actively stabilized in-fibre quantum network containing fully-fiberized metamaterial package. By altering the input state of the photon propagating in the network and passing through metamaterial, we measure the output state of the photon and show that it is coherent and does not depend on the input state of the photon. By varying the input state, we also affect the probability of the photon to pass through the absorber. All the results are in a good agreement with the above discussion. We notice, that absorber can be designed in an opposite way: to transmit symmetric state and to absorb anti-symmetric one. Proposed devices can be employed in quantum computation schemes with dual-rail encoding as well as in other protocols of quantum information, operating with single photons or weak coherent states.
Vetlugin, A.N
6a4487fd-42fc-4995-9cfa-8825fddc2e8e
Yanikgonul, S.
15572e0b-9a26-44e4-803a-ab3fe2377181
Guo, R.
e55f8f56-17fd-40b2-9e3a-69b5f70b451e
Xomalis, A.
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Adamo, G.
86d0005c-dd15-4d1d-8116-4aa9241b2602
Soci, C.
6e631c6a-0cd5-41f7-ab48-665f09d2f010
Zheludev, N.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Vetlugin, A.N
6a4487fd-42fc-4995-9cfa-8825fddc2e8e
Yanikgonul, S.
15572e0b-9a26-44e4-803a-ab3fe2377181
Guo, R.
e55f8f56-17fd-40b2-9e3a-69b5f70b451e
Xomalis, A.
4592aa40-b960-4c66-8816-5dd320228804
Adamo, G.
86d0005c-dd15-4d1d-8116-4aa9241b2602
Soci, C.
6e631c6a-0cd5-41f7-ab48-665f09d2f010
Zheludev, N.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Vetlugin, A.N, Yanikgonul, S., Guo, R., Xomalis, A., Adamo, G., Soci, C. and Zheludev, N. (2019) Metamaterial absorber for dual-rail photonic qubit filtering. Institute of Physics Singapore (IPS) Meeting 2019, Singapore. 13 - 15 Mar 2019.

Record type: Conference or Workshop Item (Paper)

Abstract

We demonstrate manipulation of a photonic qubit, encoded in a dual-rail basis, by a plasmonic metamaterial absorber. The metamaterial is designed in a way to transmit a single photon, occupying anti-symmetric superposition of two spatial modes, without losses and to absorb its symmetric superposition completely. Thus, whatever the input state of the dual-rail photon, it can leave the absorber in anti-symmetric state only. Probability to pass through the absorber is defined by the amplitude of the anti-symmetric part in the input photon state. To verify this phenomenon, we assembled actively stabilized in-fibre quantum network containing fully-fiberized metamaterial package. By altering the input state of the photon propagating in the network and passing through metamaterial, we measure the output state of the photon and show that it is coherent and does not depend on the input state of the photon. By varying the input state, we also affect the probability of the photon to pass through the absorber. All the results are in a good agreement with the above discussion. We notice, that absorber can be designed in an opposite way: to transmit symmetric state and to absorb anti-symmetric one. Proposed devices can be employed in quantum computation schemes with dual-rail encoding as well as in other protocols of quantum information, operating with single photons or weak coherent states.

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More information

Published date: 13 March 2019
Venue - Dates: Institute of Physics Singapore (IPS) Meeting 2019, Singapore, 2019-03-13 - 2019-03-15

Identifiers

Local EPrints ID: 431783
URI: https://eprints.soton.ac.uk/id/eprint/431783
PURE UUID: c432f191-e046-45d0-8e67-221ebac07a97
ORCID for A. Xomalis: ORCID iD orcid.org/0000-0001-8406-9571
ORCID for N. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 14 Jun 2019 16:30
Last modified: 30 Nov 2019 01:41

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Contributors

Author: A.N Vetlugin
Author: S. Yanikgonul
Author: R. Guo
Author: A. Xomalis ORCID iD
Author: G. Adamo
Author: C. Soci
Author: N. Zheludev ORCID iD

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