Virtual-Z Gates and Symmetric Gate Compilation
The virtual-Z (vz) gate has been established as an important tool for performing quantum gates on various platforms, including but not limited to superconducting systems. Many such platforms offer a limited set of calibrated gates and compile all other gates using combinations of X-type and vz gates...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2025-06-01
|
| Series: | PRX Quantum |
| Online Access: | http://doi.org/10.1103/PRXQuantum.6.020348 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850121451192975360 |
|---|---|
| author | Arian Vezvaee Vinay Tripathi Daria Kowsari Eli Levenson-Falk Daniel A. Lidar |
| author_facet | Arian Vezvaee Vinay Tripathi Daria Kowsari Eli Levenson-Falk Daniel A. Lidar |
| author_sort | Arian Vezvaee |
| collection | DOAJ |
| description | The virtual-Z (vz) gate has been established as an important tool for performing quantum gates on various platforms, including but not limited to superconducting systems. Many such platforms offer a limited set of calibrated gates and compile all other gates using combinations of X-type and vz gates. Here, we show that the method of compilation has important consequences in an open quantum system setting. Specifically, we experimentally demonstrate that it is crucial to choose a compilation that is symmetric with respect to vz rotations. An important example is dynamical-decoupling (DD) sequences, where improper gate decomposition can result in unintended effects such as the implementation of the wrong sequence. Our findings indicate that in many cases the performance of DD is adversely affected by the incorrect use of vz gates, compounding other coherent pulse errors. This holds even for DD sequences designed to be robust against systematic control errors. In addition, we identify another source of coherent errors: interference between consecutive pulses that follow each other too closely. This work provides insights into improving general quantum gate performance and optimizing DD sequences in particular. |
| format | Article |
| id | doaj-art-ec07549c3a07472bb3d9d0c7eb612a69 |
| institution | OA Journals |
| issn | 2691-3399 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | PRX Quantum |
| spelling | doaj-art-ec07549c3a07472bb3d9d0c7eb612a692025-08-20T02:35:05ZengAmerican Physical SocietyPRX Quantum2691-33992025-06-016202034810.1103/PRXQuantum.6.020348Virtual-Z Gates and Symmetric Gate CompilationArian VezvaeeVinay TripathiDaria KowsariEli Levenson-FalkDaniel A. LidarThe virtual-Z (vz) gate has been established as an important tool for performing quantum gates on various platforms, including but not limited to superconducting systems. Many such platforms offer a limited set of calibrated gates and compile all other gates using combinations of X-type and vz gates. Here, we show that the method of compilation has important consequences in an open quantum system setting. Specifically, we experimentally demonstrate that it is crucial to choose a compilation that is symmetric with respect to vz rotations. An important example is dynamical-decoupling (DD) sequences, where improper gate decomposition can result in unintended effects such as the implementation of the wrong sequence. Our findings indicate that in many cases the performance of DD is adversely affected by the incorrect use of vz gates, compounding other coherent pulse errors. This holds even for DD sequences designed to be robust against systematic control errors. In addition, we identify another source of coherent errors: interference between consecutive pulses that follow each other too closely. This work provides insights into improving general quantum gate performance and optimizing DD sequences in particular.http://doi.org/10.1103/PRXQuantum.6.020348 |
| spellingShingle | Arian Vezvaee Vinay Tripathi Daria Kowsari Eli Levenson-Falk Daniel A. Lidar Virtual-Z Gates and Symmetric Gate Compilation PRX Quantum |
| title | Virtual-Z Gates and Symmetric Gate Compilation |
| title_full | Virtual-Z Gates and Symmetric Gate Compilation |
| title_fullStr | Virtual-Z Gates and Symmetric Gate Compilation |
| title_full_unstemmed | Virtual-Z Gates and Symmetric Gate Compilation |
| title_short | Virtual-Z Gates and Symmetric Gate Compilation |
| title_sort | virtual z gates and symmetric gate compilation |
| url | http://doi.org/10.1103/PRXQuantum.6.020348 |
| work_keys_str_mv | AT arianvezvaee virtualzgatesandsymmetricgatecompilation AT vinaytripathi virtualzgatesandsymmetricgatecompilation AT dariakowsari virtualzgatesandsymmetricgatecompilation AT elilevensonfalk virtualzgatesandsymmetricgatecompilation AT danielalidar virtualzgatesandsymmetricgatecompilation |