Measurement-Based Quantum Thermal Machines with Feedback Control
We investigated coupled-qubit-based thermal machines powered by quantum measurements and feedback. We considered two different versions of the machine: (1) a quantum Maxwell’s demon, where the coupled-qubit system is connected to a detachable single shared bath, and (2) a measurement-assisted refrig...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-01-01
|
| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/25/2/204 |
| _version_ | 1811153819661238272 |
|---|---|
| author | Bibek Bhandari Robert Czupryniak Paolo Andrea Erdman Andrew N. Jordan |
| author_facet | Bibek Bhandari Robert Czupryniak Paolo Andrea Erdman Andrew N. Jordan |
| author_sort | Bibek Bhandari |
| collection | DOAJ |
| description | We investigated coupled-qubit-based thermal machines powered by quantum measurements and feedback. We considered two different versions of the machine: (1) a quantum Maxwell’s demon, where the coupled-qubit system is connected to a detachable single shared bath, and (2) a measurement-assisted refrigerator, where the coupled-qubit system is in contact with a hot and cold bath. In the quantum Maxwell’s demon case, we discuss both discrete and continuous measurements. We found that the power output from a single qubit-based device can be improved by coupling it to the second qubit. We further found that the simultaneous measurement of both qubits can produce higher net heat extraction compared to two setups operated in parallel where only single-qubit measurements are performed. In the refrigerator case, we used continuous measurement and unitary operations to power the coupled-qubit-based refrigerator. We found that the cooling power of a refrigerator operated with swap operations can be enhanced by performing suitable measurements. |
| first_indexed | 2024-03-11T08:52:09Z |
| format | Article |
| id | doaj.art-b51ad71465c24843b54eb0bd0fd6aa26 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-11T08:52:09Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-b51ad71465c24843b54eb0bd0fd6aa262023-11-16T20:22:15ZengMDPI AGEntropy1099-43002023-01-0125220410.3390/e25020204Measurement-Based Quantum Thermal Machines with Feedback ControlBibek Bhandari0Robert Czupryniak1Paolo Andrea Erdman2Andrew N. Jordan3Institute for Quantum Studies, Chapman University, Orange, CA 92866, USAInstitute for Quantum Studies, Chapman University, Orange, CA 92866, USADepartment of Mathematics and Computer Science, Freie Universität Berlin, Arnimallee 6, 14195 Berlin, GermanyInstitute for Quantum Studies, Chapman University, Orange, CA 92866, USAWe investigated coupled-qubit-based thermal machines powered by quantum measurements and feedback. We considered two different versions of the machine: (1) a quantum Maxwell’s demon, where the coupled-qubit system is connected to a detachable single shared bath, and (2) a measurement-assisted refrigerator, where the coupled-qubit system is in contact with a hot and cold bath. In the quantum Maxwell’s demon case, we discuss both discrete and continuous measurements. We found that the power output from a single qubit-based device can be improved by coupling it to the second qubit. We further found that the simultaneous measurement of both qubits can produce higher net heat extraction compared to two setups operated in parallel where only single-qubit measurements are performed. In the refrigerator case, we used continuous measurement and unitary operations to power the coupled-qubit-based refrigerator. We found that the cooling power of a refrigerator operated with swap operations can be enhanced by performing suitable measurements.https://www.mdpi.com/1099-4300/25/2/204discrete quantum measurementcontinuous quantum measurementquantum feedbackMaxwell’s demonrefrigerator |
| spellingShingle | Bibek Bhandari Robert Czupryniak Paolo Andrea Erdman Andrew N. Jordan Measurement-Based Quantum Thermal Machines with Feedback Control Entropy discrete quantum measurement continuous quantum measurement quantum feedback Maxwell’s demon refrigerator |
| title | Measurement-Based Quantum Thermal Machines with Feedback Control |
| title_full | Measurement-Based Quantum Thermal Machines with Feedback Control |
| title_fullStr | Measurement-Based Quantum Thermal Machines with Feedback Control |
| title_full_unstemmed | Measurement-Based Quantum Thermal Machines with Feedback Control |
| title_short | Measurement-Based Quantum Thermal Machines with Feedback Control |
| title_sort | measurement based quantum thermal machines with feedback control |
| topic | discrete quantum measurement continuous quantum measurement quantum feedback Maxwell’s demon refrigerator |
| url | https://www.mdpi.com/1099-4300/25/2/204 |
| work_keys_str_mv | AT bibekbhandari measurementbasedquantumthermalmachineswithfeedbackcontrol AT robertczupryniak measurementbasedquantumthermalmachineswithfeedbackcontrol AT paoloandreaerdman measurementbasedquantumthermalmachineswithfeedbackcontrol AT andrewnjordan measurementbasedquantumthermalmachineswithfeedbackcontrol |