東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Qubit readout with the Josephson Pho...

The University of Wisconsin - Madison., Physics.

Linked to FindBook

Google Book

Amazon

博客來

Qubit readout with the Josephson Photomultiplier.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Qubit readout with the Josephson Photomultiplier./
Author:	Ribeill, Guilhem.
Description:	199 p.
Notes:	Source: Dissertation Abstracts International, Volume: 77-08(E), Section: B.
Contained By:	Dissertation Abstracts International77-08B(E).
Subject:	Quantum physics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10077441
ISBN:	9781339589008

Qubit readout with the Josephson Photomultiplier.
Ribeill, Guilhem.

Qubit readout with the Josephson Photomultiplier. - 199 p.

Source: Dissertation Abstracts International, Volume: 77-08(E), Section: B.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2016.

Recent demonstrations of error correction in many qubit circuits, as well as efforts to build a logical qubit, have shown the need for a simple and scalable superconducting quantum bit (qubit) readout. Current solutions based on heterodyne detection and cryogenic amplification of microwave readout tones may prove difficult to scale, while photon counting presents an attractive alternative. However, the development of counters operating at these frequencies has proved technically challenging. In this thesis, we describe the development of the Josephson Photomultiplier (JPM), a microwave photon counting circuit. We discuss the JPM theoretically, and describe the fabrication of the JPM using standard thin film lithography techniques. We measure its properties as a microwave photon counter using a qubit as an in-situ calibrated source of photons. We measure a JPM quantum efficiency at the few percent level. We then use the JPM to perform readout of a transmon qubit in both the dispersive and bright regimes. We observe raw measurement fidelities of 35% and 62% respectively. We discuss how the JPM and measurement protocol could be further optimized to achieve fidelities in excess of 90%.

ISBN: 9781339589008Subjects--Topical Terms:

726746
Quantum physics.

Qubit readout with the Josephson Photomultiplier.
LDR:02068nmm a2200277 4500 001 2075992
005 20161101084208.5
008 170521s2016 ||||||||||||||||| ||eng d
020 $a 9781339589008
035 $a (MiAaPQ)AAI10077441
035 $a AAI10077441
040 $a MiAaPQ $c MiAaPQ
100 1 $a Ribeill, Guilhem. $3 3191418
245 1 0 $a Qubit readout with the Josephson Photomultiplier.
300 $a 199 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-08(E), Section: B.
500 $a Adviser: Robert F. McDermott.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2016.
520 $a Recent demonstrations of error correction in many qubit circuits, as well as efforts to build a logical qubit, have shown the need for a simple and scalable superconducting quantum bit (qubit) readout. Current solutions based on heterodyne detection and cryogenic amplification of microwave readout tones may prove difficult to scale, while photon counting presents an attractive alternative. However, the development of counters operating at these frequencies has proved technically challenging. In this thesis, we describe the development of the Josephson Photomultiplier (JPM), a microwave photon counting circuit. We discuss the JPM theoretically, and describe the fabrication of the JPM using standard thin film lithography techniques. We measure its properties as a microwave photon counter using a qubit as an in-situ calibrated source of photons. We measure a JPM quantum efficiency at the few percent level. We then use the JPM to perform readout of a transmon qubit in both the dispersive and bright regimes. We observe raw measurement fidelities of 35% and 62% respectively. We discuss how the JPM and measurement protocol could be further optimized to achieve fidelities in excess of 90%.
590 $a School code: 0262.
650 4 $a Quantum physics. $3 726746
650 4 $a Condensed matter physics. $3 3173567
690 $a 0599
690 $a 0611
710 2 $a The University of Wisconsin - Madison. $b Physics. $3 2094813
773 0 $t Dissertation Abstracts International $g 77-08B(E).
790 $a 0262
791 $a Ph.D.
792 $a 2016
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10077441