Asset Details
Do you wish to reserve the book?
Single-qubit quantum memory exceeding ten-minute coherence time
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Single-qubit quantum memory exceeding ten-minute coherence time
Do you wish to request the book?
Single-qubit quantum memory exceeding ten-minute coherence time
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Single-qubit quantum memory exceeding ten-minute coherence time
2017
Overview
A long-time quantum memory capable of storing and measuring quantum information at the single-qubit level is an essential ingredient for practical quantum computation and communication
1
,
2
. Currently, the coherence time of a single qubit is limited to less than 1 min, as demonstrated in trapped ion systems
3
–
5
, although much longer coherence times have been reported in ensembles of trapped ions
6
,
7
and nuclear spins of ionized donors
8
,
9
. Here, we report the observation of a coherence time of over 10 min for a single qubit in a
171
Yb
+
ion sympathetically cooled by a
138
Ba
+
ion in the same Paul trap, which eliminates the problem of qubit-detection inefficiency from heating of the qubit ion
10
,
11
. We also apply a few thousand dynamical decoupling pulses to suppress ambient noise from magnetic-field fluctuations and phase noise from the local oscillator
8
,
9
,
12
–
16
. The long-time quantum memory of the single trapped ion qubit would be the essential component of scalable quantum computers
1
,
17
,
18
, quantum networks
2
,
19
,
20
and quantum money
21
,
22
.
The longest coherence time of a single qubit of more than ten minutes is observed in a
171
Yb
+
ion. After sympathetically cooling the
171
Yb
+
ion qubit with a
138
Ba
+
ion, noise from magnetic-field fluctuations and the local oscillator is suppressed by a dynamic decoupling scheme.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
