Linear multiport photonic interferometers: loss analysis of temporally-encoded architectures

Abstract

Implementing spatially-encoded universal linear multiport interferometers on integrated photonic platforms with high controllability becomes increasingly difficult as the number of modes increases. In this work, we consider an architecture in which temporally-encoded modes are injected into a chain of reconfigurable beamsplitters and delay loops, and provide a detailed loss analysis for this and other comparable architectures. This analysis also yields a straightforward and explicit description of the control sequence needed for implementing an arbitrary temporally-encoded transformation. We consider possible physical implementations of these architectures and compare their performance. We conclude that implementing a chain of reconfigurable beamsplitters and delay loops on an integrated lithum niobate platform could outperform comparable architectures in the near future.

12 pages,11 figures

References in corpus (5)

• Quantum computing and the entanglement frontier
• Scalable boson-sampling with time-bin encoding using a loop-based architecture
• Universal Quantum Computing with Measurement-Induced Continuous-Variable Gate Sequence in a Loop-Based Architecture
• Repeat-until-success cubic phase gate for universal continuous-variable quantum computation
• A simple scheme for universal linear optics quantum computing with constant experimental complexity using fiber-loops

Cited by in corpus (2)

• Perspective: Toward large-scale fault-tolerant universal photonic quantum computing
• Optimal modular architectures for universal linear optics