Microwave quantum optics on superconducting circuits
| Project/Area Number |
18F18799
|
|---|
| Research Category |
Grant-in-Aid for JSPS Fellows
|
| Allocation Type | Single-year Grants |
|---|
| Section | 外国 |
|---|
| Research Field |
Atomic/Molecular/Quantum electronics
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
中村 泰信 東京大学, 先端科学技術研究センター, 教授 (90524083)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
GHEERAERT NICOLAS 東京大学, 先端科学技術研究センター, 外国人特別研究員
|
|---|
| Project Period (FY) |
2018-11-09 – 2021-03-31
|
| Project Status |
Completed (Fiscal Year 2019)
|
| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2019: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2018: ¥600,000 (Direct Cost: ¥600,000)
|
|---|
| Keywords | Superconducting qubit / microwave / quantum optics / quantum information |
|---|
| Outline of Annual Research Achievements |
My work in this fiscal year consisted in developing a unidirectional emitter of microwave photons to a 1D waveguide. This work is of particular interest regarding the prospect of fabricating 1D quantum networks, where qubits coupled to a common waveguide can exchange quantum information with one another. Indeed, without some specific design that will lead to emission in a single direction, right or left, a qubit will naturally emit in both directions of the waveguide, which will thus scatter the quantum information in different locations. The same goes for absorption. If a photon from the waveguide impinges on a usual qubit from a single direction, the qubit will not be able to absorb the full photon. The device I propose, on the other hand, can absorb and emit photons unidirectionally, which allows us to circumvent this issue. The aim for now is to demonstrate the operation of a single of those unidirectional devices, coupled to an open transmission line. A large part of my time was devoted to predicting the behaviour of the systems we are considering from a theoretical point of view. By encoding the system’s physics into matrices and equations, we can calculate the time-evolution of a given physical system in time and deduce what will be its state at a future time. All these simulations were made using the Python programming language.
|
| Research Progress Status |
翌年度、交付申請を辞退するため、記入しない。
|
| Strategy for Future Research Activity |
翌年度、交付申請を辞退するため、記入しない。
|
Report
(2 results)
Research Products
(1 results)
