Nuclear Spins in a Solid Exceeding 10-Hour Coherence Times for Ultra-Long-Term Quantum Storage
Long-term quantum storage for quantum communication applications will require optically accessible states with coherence times exceeding the desired storage time. Ground-state hyperfine levels in Eu^{3+}:Y_{2}SiO_{5} have previously shown coherence times as long as 6 h at 1.4 K when operated at a ze...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2025-01-01
|
| Series: | PRX Quantum |
| Online Access: | http://doi.org/10.1103/PRXQuantum.6.010302 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841560821853847552 |
|---|---|
| author | Fudong Wang Miaomiao Ren Weiye Sun Mucheng Guo Matthew J. Sellars Rose L. Ahlefeldt John G. Bartholomew Juan Yao Shuping Liu Manjin Zhong |
| author_facet | Fudong Wang Miaomiao Ren Weiye Sun Mucheng Guo Matthew J. Sellars Rose L. Ahlefeldt John G. Bartholomew Juan Yao Shuping Liu Manjin Zhong |
| author_sort | Fudong Wang |
| collection | DOAJ |
| description | Long-term quantum storage for quantum communication applications will require optically accessible states with coherence times exceeding the desired storage time. Ground-state hyperfine levels in Eu^{3+}:Y_{2}SiO_{5} have previously shown coherence times as long as 6 h at 1.4 K when operated at a zero-first-order-Zeeman (ZEFOZ) point. Here, we have characterized the limiting decoherence mechanisms acting in this regime, which shows that the coherence time is limited by the presence of spin impurities. This dephasing effect has been suppressed by cooling the sample to 125 mK, resulting in an extension in the coherence time to over 13 h. In the absence of these impurities, the dominant source of dephasing is the field inhomogeneity of the ZEFOZ point arising from the spin inhomogeneous broadening. We have shown that coherence times over 18 h can be achieved by operating using a spectrally narrow subensemble selected from within the inhomogeneous line. The observed coherence time is longer than that of any other system suitable for an optical quantum memory. Furthermore, at a much higher temperature of 6 K, we have realized a 6-h coherence time, which has been obtainable using single-stage cryocoolers. These results imply advanced engineering feasibility in designing and operating future quantum information-storage devices for a wide range of applications, including in satellites. |
| format | Article |
| id | doaj-art-f848e314fde74c418f4130092cb1bef5 |
| institution | Kabale University |
| issn | 2691-3399 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | PRX Quantum |
| spelling | doaj-art-f848e314fde74c418f4130092cb1bef52025-01-03T15:07:33ZengAmerican Physical SocietyPRX Quantum2691-33992025-01-016101030210.1103/PRXQuantum.6.010302Nuclear Spins in a Solid Exceeding 10-Hour Coherence Times for Ultra-Long-Term Quantum StorageFudong WangMiaomiao RenWeiye SunMucheng GuoMatthew J. SellarsRose L. AhlefeldtJohn G. BartholomewJuan YaoShuping LiuManjin ZhongLong-term quantum storage for quantum communication applications will require optically accessible states with coherence times exceeding the desired storage time. Ground-state hyperfine levels in Eu^{3+}:Y_{2}SiO_{5} have previously shown coherence times as long as 6 h at 1.4 K when operated at a zero-first-order-Zeeman (ZEFOZ) point. Here, we have characterized the limiting decoherence mechanisms acting in this regime, which shows that the coherence time is limited by the presence of spin impurities. This dephasing effect has been suppressed by cooling the sample to 125 mK, resulting in an extension in the coherence time to over 13 h. In the absence of these impurities, the dominant source of dephasing is the field inhomogeneity of the ZEFOZ point arising from the spin inhomogeneous broadening. We have shown that coherence times over 18 h can be achieved by operating using a spectrally narrow subensemble selected from within the inhomogeneous line. The observed coherence time is longer than that of any other system suitable for an optical quantum memory. Furthermore, at a much higher temperature of 6 K, we have realized a 6-h coherence time, which has been obtainable using single-stage cryocoolers. These results imply advanced engineering feasibility in designing and operating future quantum information-storage devices for a wide range of applications, including in satellites.http://doi.org/10.1103/PRXQuantum.6.010302 |
| spellingShingle | Fudong Wang Miaomiao Ren Weiye Sun Mucheng Guo Matthew J. Sellars Rose L. Ahlefeldt John G. Bartholomew Juan Yao Shuping Liu Manjin Zhong Nuclear Spins in a Solid Exceeding 10-Hour Coherence Times for Ultra-Long-Term Quantum Storage PRX Quantum |
| title | Nuclear Spins in a Solid Exceeding 10-Hour Coherence Times for Ultra-Long-Term Quantum Storage |
| title_full | Nuclear Spins in a Solid Exceeding 10-Hour Coherence Times for Ultra-Long-Term Quantum Storage |
| title_fullStr | Nuclear Spins in a Solid Exceeding 10-Hour Coherence Times for Ultra-Long-Term Quantum Storage |
| title_full_unstemmed | Nuclear Spins in a Solid Exceeding 10-Hour Coherence Times for Ultra-Long-Term Quantum Storage |
| title_short | Nuclear Spins in a Solid Exceeding 10-Hour Coherence Times for Ultra-Long-Term Quantum Storage |
| title_sort | nuclear spins in a solid exceeding 10 hour coherence times for ultra long term quantum storage |
| url | http://doi.org/10.1103/PRXQuantum.6.010302 |
| work_keys_str_mv | AT fudongwang nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage AT miaomiaoren nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage AT weiyesun nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage AT muchengguo nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage AT matthewjsellars nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage AT roselahlefeldt nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage AT johngbartholomew nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage AT juanyao nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage AT shupingliu nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage AT manjinzhong nuclearspinsinasolidexceeding10hourcoherencetimesforultralongtermquantumstorage |