Quantum manipulation of biphoton spectral distributions in a 2D frequency space toward arbitrary shaping of a biphoton wave packet

TL;DR

This paper demonstrates experimental control over the spectral and phase properties of biphoton wave packets in a two-dimensional frequency space, enabling arbitrary quantum shaping of multi-photon states.

Contribution

It introduces a novel joint manipulation method for biphoton spectra and phases, advancing quantum control techniques for multi-photon wave packets.

Findings

Successful spectral and phase manipulation confirmed by TSI and HOM interference

Joint manipulation enables arbitrary shaping of biphoton wave packets

Technique advances quantum control of multi-photon states

Abstract

In this work, we experimentally manipulate the spectrum and phase of a biphoton wave packet in a two-dimensional frequency space. The spectrum is shaped by adjusting the temperature of the crystal, and the phase is controlled by tilting the dispersive glass plate. The manipulating effects are confirmed by measuring the two-photon spectral intensity (TSI) and the Hong-Ou-Mandel (HOM) interference patterns. Unlike the previous independent manipulation schemes, here we perform joint manipulation on the biphoton spectrum. The technique in this work paves the way for arbitrary shaping of a multi-photon wave packet in a quantum manner.