Implement BB84 and analyze its performance using a single photon source based on parametric down conversion. This experiment demonstrates fundamentally secure cryptographic key distribution.

Find the qubit resonant frequency, perform Rabi oscillations, and analyze performance using the spin of a defect in diamond. This experiment demonstrates basic single qubit functionality.

Violate Bell's inequalities using an entangled photon source based on parametric down conversion. The experiment proves that non-local correlations exist in quantum systems.

Trap (very large) ions in an electromagnetic potential and determine the charge-to-mass ratio. This type of trap is used in trapped ion quantum computers. (2 set-ups)

Prove that a single defect in diamond emits one photon at a time. So-called single photon sources are the primary resource for photonics-based quantum computation.

This is a "virtual" lab exploring quantum state tomography and teleportation on cloud quantum hardware. 

 Learn the basics of Fourier optics, the optical theory underpinning control of neutral atom quantum computers. 

The entanglement and single photon lab is a commercially available system from QuTools based on an entangled photon pair source based on spontaneous parametric down conversion (PDC). Capabilities include one and two-qubit tomography, quantum key distribution, violation of Bell’s inequalities, single photon auto-correlation measurement  (g(2)) and Hong-Ou-Mandel interference. 

This project is supported by IMOD (NSF DMR-2019444)

The ion trap uses high-voltage AC signal to create a quadrupole trapping potential for trapping macroscopic charged particles using methods identical to those used in ion traps for quantum computing. Students will be able to trap and manipulate individual particles and small collections of particles, study their motion, compensate stray fields and measure parameters of the trap.  The video to the left shows the secular mode oscillation of two pollen grains trapped in QT3's ion trap.

This project is supported by a Student Technology Fee grant.

This optically-detected magnetic magnetic resonance (ODMR) set-up enables students to perform spin-relaxation measurements on an ensemble of NV centers at room temperature. Features include continuous-wave optically-detected magnetic resonance, Rabi oscillations and dynamic decoupling sequences. The system can also be utilized for other materials systems with optical and RF bands in the experimental range. Finally, the system can be utilized as a testbed for RF quantum control electronics. The lab is based on  Sewani et al., where the figure to the left came from.