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John Watrous (computer scientist)

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equivalent: together, the authors showed that quantum effects do not offer advantages for computation if computers can send information to the past through a type of
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Kitaev, Alexei; Watrous, John (2000). "Parallelization, amplification, and exponential time simulation of quantum interactive proof systems".
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Rahul Jain; Sarvagya Upadhyay; John Watrous (2009). "Two-message quantum interactive proofs are in PSPACE".
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STOC '00: Proceedings of the thirty-second annual ACM symposium on Theory of computing
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Proc. 36th Annual Symposium on Foundations of Computer Science (Milwaukee, WI, 1995)
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Kondacs, A.; Watrous, J. (1997). "On the power of quantum finite state automata".
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Rahul Jain; Zhengfeng Ji; Sarvagya Upadhyay; John Watrous (2009). "QIP = PSPACE".
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Proceedings of the 38th Annual Symposium on Foundations of Computer Science
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Watrous, John (1995). "On one-dimensional quantum cellular automata".
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List of editors of Quantum Information & Computation
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is the Technical Director of IBM Quantum Education at
182:, and the quantum analogue of the celebrated result 550:"How Time-Traveling Could Affect Quantum Computing" 94: 72: 58: 37: 21: 8: 619:Academic staff of the University of Waterloo 125:David R. Cheriton School of Computer Science 137:Perimeter Institute for Theoretical Physics 89:Perimeter Institute for Theoretical Physics 46:State University of New York at Stony Brook 29: 18: 471: 417: 383: 265:Canadian Institute for Advanced Research 141:Canadian Institute for Advanced Research 256: 254: 250: 624:University of Wisconsin–Madison alumni 296:List of editors of Theory of Computing 167:Quantum Information & Computation 7: 178:. He is well known for his work on 210:, he showed that certain forms of 164:and former editor for the journal 147:from 2002 to 2006 where he held a 14: 216:quantum and classical computation 170:. His research interests include 629:Theoretical computer scientists 595:Institute for Quantum Computing 235:University of Wisconsin–Madison 158:He is an editor of the journal 133:Institute for Quantum Computing 85:Institute for Quantum Computing 42:University of Wisconsin–Madison 644:Quantum information scientists 16:Theoretical computer scientist 1: 579:Mathematics Genealogy Project 419:10.1016/S0304-3975(01)00375-9 135:, an affiliate member of the 286:at the QuantumWorks website. 660: 222:proposed by the physicist 180:quantum interactive proofs 445:. ACM. pp. 608–617. 348:Dave Bacon (2009-07-28). 237:under the supervision of 204:quantum cellular automata 106: 51: 28: 548:Lisa Zyga (2008-11-20). 516:10.1109/SFCS.1995.492583 329:Computational Complexity 200:quantum finite automata 119:and was a professor of 639:Canada Research Chairs 399:Watrous, John (2003). 129:University of Waterloo 81:University of Waterloo 220:closed timelike curve 149:Canada Research Chair 145:University of Calgary 113:John Harrison Watrous 77:University of Calgary 23:John Harrison Watrous 634:Cellular automatists 139:and a Fellow of the 406:Theor. Comput. Sci. 354:The Quantum Pontiff 176:quantum computation 172:quantum information 161:Theory of Computing 282:2011-07-06 at the 131:, a member of the 493:. pp. 66–75. 452:978-1-58113-184-0 350:"OMG QIP=PSPACE!" 153:quantum computing 110: 109: 67:Quantum Computing 53:Scientific career 651: 598: 588: 582: 572: 566: 565: 563: 562: 545: 539: 537: 501: 495: 494: 484: 478: 477: 475: 463: 457: 456: 438: 432: 431: 421: 396: 390: 389: 387: 375: 369: 368: 366: 365: 356:. Archived from 345: 339: 338: 336: 335: 317: 311: 305: 299: 293: 287: 274: 268: 258: 229:He obtained his 121:computer science 96:Doctoral advisor 63:Computer Science 33: 19: 659: 658: 654: 653: 652: 650: 649: 648: 604: 603: 602: 601: 589: 585: 573: 569: 560: 558: 547: 546: 542: 526: 503: 502: 498: 486: 485: 481: 465: 464: 460: 453: 440: 439: 435: 398: 397: 393: 377: 376: 372: 363: 361: 347: 346: 342: 333: 331: 319: 318: 314: 306: 302: 294: 290: 284:Wayback Machine 275: 271: 259: 252: 247: 233:in 1998 at the 87: 83: 79: 44: 38:Alma mater 24: 17: 12: 11: 5: 657: 655: 647: 646: 641: 636: 631: 626: 621: 616: 606: 605: 600: 599: 583: 567: 540: 524: 496: 479: 458: 451: 433: 391: 370: 340: 325:"QIP = PSPACE" 323:(2009-07-29). 312: 300: 288: 269: 249: 248: 246: 243: 208:Scott Aaronson 108: 107: 104: 103: 98: 92: 91: 74: 70: 69: 60: 56: 55: 49: 48: 39: 35: 34: 26: 25: 22: 15: 13: 10: 9: 6: 4: 3: 2: 656: 645: 642: 640: 637: 635: 632: 630: 627: 625: 622: 620: 617: 615: 614:Living people 612: 611: 609: 596: 592: 587: 584: 580: 576: 571: 568: 557: 556: 551: 544: 541: 535: 531: 527: 525:0-8186-7183-1 521: 517: 513: 509: 508: 500: 497: 492: 491: 483: 480: 474: 469: 462: 459: 454: 448: 444: 437: 434: 429: 425: 420: 415: 411: 408: 407: 402: 395: 392: 386: 381: 374: 371: 360:on 2010-01-05 359: 355: 351: 344: 341: 330: 326: 322: 321:Lance Fortnow 316: 313: 309: 304: 301: 297: 292: 289: 285: 281: 278: 273: 270: 266: 262: 257: 255: 251: 244: 242: 240: 236: 232: 227: 225: 224:David Deutsch 221: 217: 213: 209: 205: 201: 197: 193: 189: 186: =  185: 181: 177: 173: 169: 168: 163: 162: 156: 154: 150: 146: 142: 138: 134: 130: 126: 122: 118: 114: 105: 102: 99: 97: 93: 90: 86: 82: 78: 75: 71: 68: 64: 61: 57: 54: 50: 47: 43: 40: 36: 32: 27: 20: 591:John Watrous 586: 575:John Watrous 570: 559:. Retrieved 553: 543: 506: 499: 489: 482: 461: 442: 436: 409: 404: 394: 373: 362:. Retrieved 358:the original 353: 343: 332:. Retrieved 328: 315: 303: 291: 277:John Watrous 272: 261:John Watrous 228: 165: 159: 157: 112: 111: 73:Institutions 52: 212:time travel 608:Categories 597:directory. 561:2009-12-30 364:2009-12-30 334:2009-12-30 245:References 473:0905.1300 428:0304-3975 385:0907.4737 239:Eric Bach 214:can make 101:Eric Bach 280:Archived 267:website. 593:at the 577:at the 555:PhysOrg 534:1619103 263:at the 206:. With 127:at the 123:at the 532:  522:  449:  426:  188:PSPACE 59:Fields 468:arXiv 380:arXiv 231:Ph.D. 520:ISBN 447:ISBN 424:ISSN 202:and 174:and 512:doi 414:doi 410:292 196:EXP 192:QIP 151:in 117:IBM 610:: 552:. 530:MR 528:. 518:. 422:. 403:. 352:. 327:. 253:^ 241:. 226:. 190:: 184:IP 155:. 65:, 581:. 564:. 538:. 536:. 514:: 476:. 470:: 455:. 430:. 416:: 388:. 382:: 367:. 337:. 310:. 298:.

Index

Portrait of Professor John Watrous, taken in the University of Waterloo's Davis Centre in January 2019
University of Wisconsin–Madison
State University of New York at Stony Brook
Computer Science
Quantum Computing
University of Calgary
University of Waterloo
Institute for Quantum Computing
Perimeter Institute for Theoretical Physics
Doctoral advisor
Eric Bach
IBM
computer science
David R. Cheriton School of Computer Science
University of Waterloo
Institute for Quantum Computing
Perimeter Institute for Theoretical Physics
Canadian Institute for Advanced Research
University of Calgary
Canada Research Chair
quantum computing
Theory of Computing
Quantum Information & Computation
quantum information
quantum computation
quantum interactive proofs
IP
PSPACE
QIP
EXP

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