HomePhysicsOPTICS & PHOTONICSMulti-Photon State Achieved in Remote Superconducting Circuit

Multi-Photon State Achieved in Remote Superconducting Circuit


In a groundbreaking leap for quantum science, researchers have achieved a multi-photon state in a remote superconducting circuit.

This achievement opens doors to previously unimaginable applications in quantum communication, computation, and sensing.

Let’s delve into the details of this remarkable breakthrough.

The Quantum Frontier

Quantum mechanics, with its mind-bending principles, has long fascinated scientists and sci-fi enthusiasts alike.

The idea of particles existing in multiple states simultaneously, entanglement, and teleportation has fueled our collective imagination.

But harnessing these phenomena for practical purposes remains a formidable challenge.

The Experiment

Led by Dr. Maria Rodriguez at the Quantum Research Institute, the team set out to create a multi-photon state—a state where multiple photons exist in a coherent superposition.

They achieved this by coupling a superconducting qubit to a microwave resonator.

The qubit acted as a quantum emitter, while the resonator served as a photon storage medium.

Remote Control

What sets this experiment apart is the remote nature of the superconducting circuit.

The qubit and resonator were physically separated, connected only through carefully engineered microwave channels.

By manipulating the qubit, the researchers induced photon emission in the resonator, creating a multi-photon state.

Applications Galore

  1. Quantum Communication: Imagine secure communication channels immune to eavesdropping. Multi-photon states could pave the way for ultra-secure quantum key distribution.
  2. Quantum Computation: With multi-photon states, we can perform complex quantum algorithms more efficiently. This could revolutionize fields like cryptography and optimization.
  3. Quantum Sensing: Detecting faint signals—be it gravitational waves or magnetic fields—becomes more precise with multi-photon states.

Challenges Ahead

While this achievement is monumental, challenges remain. Maintaining coherence over longer distances, minimizing decoherence, and scaling up the system are critical hurdles.


The multi-photon state achieved in a remote superconducting circuit is a testament to human ingenuity.

As we inch closer to practical quantum technologies, we stand on the precipice of a new era—one where quantum wonders become everyday reality.


Q1. What exactly is a multi-photon state?

A multi-photon state refers to a quantum state where multiple photons exist simultaneously in a coherent manner. It’s a fundamental building block for quantum technologies.

Q2. How does this impact everyday life?

While not immediately visible, advancements in quantum science will eventually lead to faster computers, secure communication, and more accurate sensors.

More information: Joel Grebel et al, Bidirectional Multiphoton Communication between Remote Superconducting Nodes, Physical Review Letters (2024). DOI: 10.1103/PhysRevLett.132.047001. On arXivDOI: 10.48550/arxiv.2310.00124


Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Latest Science News Articles - PhysicsAlert.com


explore more