Graduation Year


Date of Thesis Acceptance

Spring 5-9-2018

Major Department or Program



Mark Beck


This thesis focuses on detecting correlated errors in quantum systems using loop state-preparation-and-measurement (SPAM) tomography. I discuss a two-qubit quantum system through the lens of quantum cryptography: an eavesdropper has introduced “correlated errors” into a quantum machine designed to distribute a secure encryption key between two parties. The errors have corrupted the machine and made it appear secure, when in fact it is not. I experimentally demonstrate that loop SPAM tomography can identify these errors using only measured data and minimal assumptions.

Page Count


Subject Headings

Bell, J. S. -- Bell inequality‚ Quantum systems‚ Tomography‚ Errors, Scientific‚ Cryptography‚ Hilbert space‚ Quantum theory‚ Quantum entanglement‚ Science‚ Whitman College 2018 -- Dissertation collection -- Physics Department

Permanent URL

Document Type

Public Accessible Thesis

Available for download on Saturday, May 09, 2020

Included in

Physics Commons



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