# Swap-test interferometry with biased ancilla noise

@inproceedings{vCernotik2021SwaptestIW, title={Swap-test interferometry with biased ancilla noise}, author={Ondvrej vCernot'ik and Iivari Pietikainen and Shruti Puri and Steven M. Girvin and Radim Filip}, year={2021} }

The Mach–Zehnder interferometer is a powerful device for detecting small phase shifts between two light beams. Simple input states—such as coherent states or single photons—can reach the standard quantum limit of phase estimation while more complicated states can be used to reach Heisenberg scaling; the latter, however, require complex states at the input of the interferometer which are difficult to prepare. The quest for highly sensitive phase estimation therefore calls for interferometers…

## 2 Citations

### Controlled beam splitter gate transparent to dominant ancilla errors

- PhysicsQuantum Science and Technology
- 2022

In hybrid circuit quantum electrodynamics (QED) architectures containing both ancilla qubits and bosonic modes, a controlled beam splitter (cBS) gate is a powerful resource. It can be used to create…

### Ancilla-Error-Transparent Controlled Beam Splitter Gate

- Physics
- 2021

In hybrid circuit QED architectures containing both ancilla qubits and bosonic modes, a controlled beam splitter gate is a powerful resource. It can be used to create (up to a controlled-parity…

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