Research Highlights

Precision Measurement | Quantum Information Science & Technology
Mapping Noise to Improve Quantum Measurements
Two orbs are compared to each other, showing different areas noise affects them with colored areas.
Published: June 06, 2024

One of the biggest challenges in quantum technology and quantum sensing is “noise”–seemingly random environmental disturbances that can disrupt the delicate quantum states of qubits, the fundamental units of quantum information. Looking deeper at this issue, JILA Associate Fellow and University of Colorado Boulder Physics assistant professor Shuo Sun recently collaborated with Andrés Montoya-Castillo, assistant professor of chemistry (also at CU Boulder), and his team to develop a new method for better understanding and controlling this noise, potentially paving the way for significant advancements in quantum computing, sensing, and control. Their new method, which uses a mathematical technique called a Fourier transform, was published recently in the journal npj Quantum Information

PI: Shuo Sun
Read More
Nanoscience | Precision Measurement | Quantum Information Science & Technology
Diamonds in the Quantum Rough: A Sparkling Breakthrough
Hybrid integration of a designer nanodiamond with photonic circuits via ring resonators.
Published: November 03, 2023

In quantum information science, many particles can act as “bits,” from individual atoms to photons. At JILA, researchers utilize these bits as “qubits,” storing and processing quantum 1s or 0s through a unique system. 

While many JILA Fellows focus on qubits found in nature, such as atoms and ions, JILA Associate Fellow and University of Colorado Boulder Assistant Professor of Physics Shuo Sun is taking a different approach by using “artificial atoms,” or semiconducting nanocrystals with unique electronic properties. By exploiting the atomic dynamics inside fabricated diamond crystals, physicists like Sun can produce a new type of qubit, known as a “solid-state qubit,” or an artificial atom.

PI: Shuo Sun
Read More
Quantum Information Science & Technology
Using Quantum Knots to Build a Secure Internet
Photo of Quantum Knot model
Published: March 01, 2021

When looking within a quantum internet, the Sun Lab is looking at specifically photons. By entangling these photons, scientists tie little quantum knots between them, so they jointly represent the information to be delivered. The photons aren’t just paired off within these quantum knots. They’re connected to hundreds of other photons in a tree-shaped pattern. The robust redundancy of these photons means that scientists can still read the information, even if a few photons are lost.

PI: Shuo Sun
Read More