About

I am a computer science PhD student at Carnegie Mellon University, advised by Vipul Goyal. My research interest is in quantum cryptography and more broadly, theoretical computer science.

You can contact me at alpercakan98@gmail.com for any questions.

Publications and Preprints

2026

Classical Oracle Separation of QMA from the QCMA Hierarchy and Quantum Cryptography Even When P = QCMA
Alper Cakan.
Manuscript PDF

Separating QMA from QCIP with a Classical Oracle, or, the Power of Quantum Proofs over Classical Interaction for Quantum Verifiers
Alper Cakan.
Preprint · PDF

Separating ClonableQMA and QCMA Relative to a Classical Oracle
Alper Cakan, Kai-Min Chung, Wei-Hsiang Hung, and Tzu-Yi Yang.
Preprint · arXiv

Copy-Protection with Correlated Challenges: Point Functions and More via Decisional Coset Monogamy
Amit Behera, Alper Cakan, and Vipul Goyal.
Preprint · arXiv

Public-Key Quantum Fire and Key-Fire From Classical Oracles
Alper Cakan, Vipul Goyal, and Omri Shmueli.
CRYPTO’26 · QCrypt’25 (talk) · ePrint

Multi-Copy Security in Quantum Cryptography and More
Alper Cakan, Vipul Goyal, Fuyuki Kitagawa, Ryo Nishimaki, and Takashi Yamakawa.
CRYPTO’26 · QCrypt’26 (talk) · ePrint

Anonymous Public-Key Quantum Money and Universally Verifiable Quantum Voting
Alper Cakan, Vipul Goyal, and Takashi Yamakawa.
CRYPTO’26 · QIP’25 (talk) · QCrypt’25 (talk) · ePrint

How to Delete Without a Trace: Certified Deniability in a Quantum World
Alper Cakan, Vipul Goyal, and Justin Raizes.
CRYPTO’26 · QIP’25 (talk) · QCrypt’26 (talk) · ePrint

How to Copy-Protect Malleable-Puncturable Cryptographic Functionalities Under Arbitrary Challenge Distributions: A Unified Solution to Quantum Protection
Alper Cakan and Vipul Goyal.
EUROCRYPT’26 · ePrint

On the Cryptographic Futility of Non-Collapsing Measurements
Alper Cakan, Dakshita Khurana, Tomoyuki Morimae, Yuki Shirakawa, Kabir Tomer, and Takashi Yamakawa.
EUROCRYPT’26 · arXiv

Unbounded Leakage-Resilient Encryption and Signatures
Alper Cakan and Vipul Goyal.
Preprint · ePrint

Unclonable Cryptography with Unbounded Collusions and Impossibility of Hyperefficient Shadow Tomography
Alper Cakan and Vipul Goyal.
TCC’24 · TQC’25 (talk) · QCrypt’25 (talk) · ePrint

Unbounded Leakage-Resilience and Intrusion-Detection in a Quantum World
Alper Cakan, Vipul Goyal, Chen-Da Liu-Zhang, and João Ribeiro.
TCC’24 · TQC’24 (talk) · ePrint

Computational Quantum Secret Sharing
Alper Cakan, Vipul Goyal, Chen-Da Liu-Zhang, and João Ribeiro.
TQC’23 · ePrint

Linear Threshold Secret-Sharing with Binary Reconstruction
Marshall Ball, Alper Cakan, and Tal Malkin.
ITC’21 · ECCC

Importance-Driven Deep Learning System Testing
Simos Gerasimou, Hasan Ferit Eniser, Alper Sen, and Alper Cakan.
ICSE’20 · arXiv